Crash when selecting the filename from locator

Thread 1 (Thread 0x7fdf39b92940 (LWP 5739)):
#0  __gnu_cxx::__ops::_Iter_equals_val<QWidget* const>::operator()<QList<QObject*>::const_iterator> (this=0x7ffd4e36a5c8, __it=...) at /usr/include/c++/11/bits/predefined_ops.h:270
#1  0x00007fdf3f726c3b in std::__find_if<QList<QObject*>::const_iterator, __gnu_cxx::__ops::_Iter_equals_val<QWidget* const> > (__first=..., __last=..., __pred=...) at /usr/include/c++/11/bits/stl_algobase.h:2077
#2  0x00007fdf3f7241cd in std::__find_if<QList<QObject*>::const_iterator, __gnu_cxx::__ops::_Iter_equals_val<QWidget* const> > (__first=..., __last=..., __pred=...) at /usr/include/c++/11/bits/stl_algobase.h:2114
#3  0x00007fdf3f720c80 in std::find<QList<QObject*>::const_iterator, QWidget*> (__first=..., __last=..., __val=@0x7ffd4e36a6d0: 0xa5dd0b0) at /usr/include/c++/11/bits/stl_algo.h:3884
#4  0x00007fdf3f71cd42 in QtPrivate::sequential_erase<QList<QObject*>, QWidget*> (c=..., t=@0x7ffd4e36a6d0: 0xa5dd0b0) at /home/jarek/dev/qt-62-small/qtbase/src/corelib/tools/qcontainertools_impl.h:284
#5  0x00007fdf3f71ce56 in QtPrivate::sequential_erase_with_copy<QList<QObject*>, QWidget*> (c=..., t=@0x7ffd4e36a748: 0xa5dd0b0) at /home/jarek/dev/qt-62-small/qtbase/src/corelib/tools/qcontainertools_impl.h:301
#6  0x00007fdf3f71ce7b in QList<QObject*>::removeAll<QWidget*> (this=0x7fdf3da91c40 <main_arena+416>, t=@0x7ffd4e36a748: 0xa5dd0b0) at /home/jarek/dev/qt-62-small/qtbase/src/corelib/tools/qlist.h:519
#7  0x00007fdf3f6fb493 in QWidget::removeAction (this=0xa5dd0b0, action=0x4d808f0) at /home/jarek/dev/qt-62-small/qtbase/src/widgets/kernel/qwidget.cpp:3192
#8  0x00007fdf0d31c8cf in LanguageClient::updateEditorToolBar (editor=0xa79a6c0) at /home/jarek/dev/creator-6/src/plugins/languageclient/languageclientutils.cpp:271
#9  0x00007fdf0d2a64f7 in LanguageClient::LanguageClientManager::editorOpened (this=0x187b390, editor=0xa79a6c0) at /home/jarek/dev/creator-6/src/plugins/languageclient/languageclientmanager.cpp:487
#10 0x00007fdf0d2b8b1e in QtPrivate::FunctorCall<QtPrivate::IndexesList<0>, QtPrivate::List<Core::IEditor*>, void, void (LanguageClient::LanguageClientManager::*)(Core::IEditor*)>::call (f=(void (LanguageClient::LanguageClientManager::*)(LanguageClient::LanguageClientManager * const, Core::IEditor *)) 0x7fdf0d2a633e <LanguageClient::LanguageClientManager::editorOpened(Core::IEditor*)>, o=0x187b390, arg=0x7ffd4e36ac70) at /home/jarek/dev/qt-62-small/qtbase/src/corelib/kernel/qobjectdefs_impl.h:152
#11 0x00007fdf0d2b589f in QtPrivate::FunctionPointer<void (LanguageClient::LanguageClientManager::*)(Core::IEditor*)>::call<QtPrivate::List<Core::IEditor*>, void> (f=(void (LanguageClient::LanguageClientManager::*)(LanguageClient::LanguageClientManager * const, Core::IEditor *)) 0x7fdf0d2a633e <LanguageClient::LanguageClientManager::editorOpened(Core::IEditor*)>, o=0x187b390, arg=0x7ffd4e36ac70) at /home/jarek/dev/qt-62-small/qtbase/src/corelib/kernel/qobjectdefs_impl.h:185
#12 0x00007fdf0d2b10bb in QtPrivate::QSlotObject<void (LanguageClient::LanguageClientManager::*)(Core::IEditor*), QtPrivate::List<Core::IEditor*>, void>::impl (which=1, this_=0x18a48e0, r=0x187b390, a=0x7ffd4e36ac70, ret=0x0) at /home/jarek/dev/qt-62-small/qtbase/src/corelib/kernel/qobjectdefs_impl.h:395
#13 0x00007fdf3df72ca1 in QtPrivate::QSlotObjectBase::call (this=0x18a48e0, r=0x187b390, a=0x7ffd4e36ac70) at /home/jarek/dev/qt-62-small/qtbase/src/corelib/kernel/qobjectdefs_impl.h:375
#14 0x00007fdf3dfd84d9 in doActivate<false> (sender=0x1376b20, signal_index=7, argv=0x7ffd4e36ac70) at /home/jarek/dev/qt-62-small/qtbase/src/corelib/kernel/qobject.cpp:3908
#15 0x00007fdf3dfd0e3f in QMetaObject::activate (sender=0x1376b20, m=0x7fdf157772c0 <Core::EditorManager::staticMetaObject>, local_signal_index=4, argv=0x7ffd4e36ac70) at /home/jarek/dev/qt-62-small/qtbase/src/corelib/kernel/qobject.cpp:3968
#16 0x00007fdf1519d03b in Core::EditorManager::editorOpened (this=0x1376b20, _t1=0xa79a6c0) at /home/jarek/dev/creator-6-build-62-small-with-tests/src/plugins/coreplugin/Core_autogen/YAYUJISNOO/moc_editormanager.cpp:571
#17 0x00007fdf152e4dd4 in Core::Internal::EditorManagerPrivate::addEditor (editor=0xa79a6c0) at /home/jarek/dev/creator-6/src/plugins/coreplugin/editormanager/editormanager.cpp:1457
#18 0x00007fdf152e1c86 in Core::Internal::EditorManagerPrivate::openEditor (view=0x12d5b00, filePath=..., editorId=..., flags=..., newEditor=0x0) at /home/jarek/dev/creator-6/src/plugins/coreplugin/editormanager/editormanager.cpp:913
#19 0x00007fdf152ed8a3 in Core::EditorManager::openEditor (filePath=..., editorId=..., flags=..., newEditor=0x0) at /home/jarek/dev/creator-6/src/plugins/coreplugin/editormanager/editormanager.cpp:3068
#20 0x00007fdf1540168b in Core::BaseFileFilter::openEditorAt (selection=...) at /home/jarek/dev/creator-6/src/plugins/coreplugin/locator/basefilefilter.cpp:244
#21 0x00007fdf1540147a in Core::BaseFileFilter::accept (this=0x15379c0, selection=..., newText=0x7ffd4e36b3e0, selectionStart=0x7ffd4e36b3dc, selectionLength=0x7ffd4e36b3d8) at /home/jarek/dev/creator-6/src/plugins/coreplugin/locator/basefilefilter.cpp:227
#22 0x00007fdf15441719 in Core::Internal::LocatorWidget::acceptEntry (this=0x14b0b60, row=1) at /home/jarek/dev/creator-6/src/plugins/coreplugin/locator/locatorwidget.cpp:968
#23 0x00007fdf1544129f in Core::Internal::LocatorWidget::handleSearchFinished (this=0x14b0b60) at /home/jarek/dev/creator-6/src/plugins/coreplugin/locator/locatorwidget.cpp:908
#24 0x00007fdf154472f7 in QtPrivate::FunctorCall<QtPrivate::IndexesList<>, QtPrivate::List<>, void, void (Core::Internal::LocatorWidget::*)()>::call(void (Core::Internal::LocatorWidget::*)(), Core::Internal::LocatorWidget*, void**) (f=(void (Core::Internal::LocatorWidget::*)(Core::Internal::LocatorWidget * const)) 0x7fdf1544122c <Core::Internal::LocatorWidget::handleSearchFinished()>, o=0x14b0b60, arg=0x7ffd4e36b888) at /home/jarek/dev/qt-62-small/qtbase/src/corelib/kernel/qobjectdefs_impl.h:152
#25 0x00007fdf15446c62 in QtPrivate::FunctionPointer<void (Core::Internal::LocatorWidget::*)()>::call<QtPrivate::List<>, void>(void (Core::Internal::LocatorWidget::*)(), Core::Internal::LocatorWidget*, void**) (f=(void (Core::Internal::LocatorWidget::*)(Core::Internal::LocatorWidget * const)) 0x7fdf1544122c <Core::Internal::LocatorWidget::handleSearchFinished()>, o=0x14b0b60, arg=0x7ffd4e36b888) at /home/jarek/dev/qt-62-small/qtbase/src/corelib/kernel/qobjectdefs_impl.h:185
#26 0x00007fdf15446451 in QtPrivate::QSlotObject<void (Core::Internal::LocatorWidget::*)(), QtPrivate::List<>, void>::impl(int, QtPrivate::QSlotObjectBase*, QObject*, void**, bool*) (which=1, this_=0x14ab1d0, r=0x14b0b60, a=0x7ffd4e36b888, ret=0x0) at /home/jarek/dev/qt-62-small/qtbase/src/corelib/kernel/qobjectdefs_impl.h:395
#27 0x00007fdf3df72ca1 in QtPrivate::QSlotObjectBase::call (this=0x14ab1d0, r=0x14b0b60, a=0x7ffd4e36b888) at /home/jarek/dev/qt-62-small/qtbase/src/corelib/kernel/qobjectdefs_impl.h:375
#28 0x00007fdf3dfd84d9 in doActivate<false> (sender=0x14b6190, signal_index=4, argv=0x7ffd4e36b888) at /home/jarek/dev/qt-62-small/qtbase/src/corelib/kernel/qobject.cpp:3908
#29 0x00007fdf3dfd0e3f in QMetaObject::activate (sender=0x14b6190, m=0x7fdf3e5f78e0 <QFutureWatcherBase::staticMetaObject>, local_signal_index=1, argv=0x0) at /home/jarek/dev/qt-62-small/qtbase/src/corelib/kernel/qobject.cpp:3968
#30 0x00007fdf3e1b8995 in QFutureWatcherBase::finished (this=0x14b6190) at qtbase/src/corelib/Core_autogen/include/moc_qfuturewatcher.cpp:313
#31 0x00007fdf3e1b7e1f in QFutureWatcherBasePrivate::sendCallOutEvent (this=0x14b3c30, event=0x7fde45e918f0) at /home/jarek/dev/qt-62-small/qtbase/src/corelib/thread/qfuturewatcher.cpp:529
#32 0x00007fdf3e1b7807 in QFutureWatcherBase::event (this=0x14b6190, event=0x7fde45e918f0) at /home/jarek/dev/qt-62-small/qtbase/src/corelib/thread/qfuturewatcher.cpp:428
#33 0x00007fdf3f68c388 in QApplicationPrivate::notify_helper (this=0xf1c780, receiver=0x14b6190, e=0x7fde45e918f0) at /home/jarek/dev/qt-62-small/qtbase/src/widgets/kernel/qapplication.cpp:3401
#34 0x00007fdf3f689935 in QApplication::notify (this=0x7ffd4e36c920, receiver=0x14b6190, e=0x7fde45e918f0) at /home/jarek/dev/qt-62-small/qtbase/src/widgets/kernel/qapplication.cpp:2760
#35 0x00007fdf3df54c38 in QCoreApplication::notifyInternal2 (receiver=0x14b6190, event=0x7fde45e918f0) at /home/jarek/dev/qt-62-small/qtbase/src/corelib/kernel/qcoreapplication.cpp:1063
#36 0x00007fdf3df55610 in QCoreApplication::sendEvent (receiver=0x14b6190, event=0x7fde45e918f0) at /home/jarek/dev/qt-62-small/qtbase/src/corelib/kernel/qcoreapplication.cpp:1471
#37 0x00007fdf3df5632b in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0xf03070) at /home/jarek/dev/qt-62-small/qtbase/src/corelib/kernel/qcoreapplication.cpp:1830
#38 0x00007fdf3df55c96 in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at /home/jarek/dev/qt-62-small/qtbase/src/corelib/kernel/qcoreapplication.cpp:1689
#39 0x00007fdf3e2bed54 in postEventSourceDispatch (s=0xf66b00) at /home/jarek/dev/qt-62-small/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:279
#40 0x00007fdf3ac7733f in g_main_dispatch (context=0x7fdf24005010) at ../glib/gmain.c:3381
#41 g_main_context_dispatch (context=0x7fdf24005010) at ../glib/gmain.c:4099
#42 0x00007fdf3accc2b8 in g_main_context_iterate.constprop.0 (context=context@entry=0x7fdf24005010, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/gmain.c:4175
#43 0x00007fdf3ac749e3 in g_main_context_iteration (context=0x7fdf24005010, may_block=1) at ../glib/gmain.c:4240
#44 0x00007fdf3e2bf5b6 in QEventDispatcherGlib::processEvents (this=0xf66070, flags=...) at /home/jarek/dev/qt-62-small/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:429
#45 0x00007fdf2c5ac6ec in QXcbGlibEventDispatcher::processEvents (this=0xf66070, flags=...) at /home/jarek/dev/qt-62-small/qtbase/src/plugins/platforms/xcb/qxcbeventdispatcher.cpp:132
#46 0x00007fdf3df67323 in QEventLoop::processEvents (this=0x7ffd4e36c530, flags=...) at /home/jarek/dev/qt-62-small/qtbase/src/corelib/kernel/qeventloop.cpp:139
#47 0x00007fdf3df67653 in QEventLoop::exec (this=0x7ffd4e36c530, flags=...) at /home/jarek/dev/qt-62-small/qtbase/src/corelib/kernel/qeventloop.cpp:230
#48 0x00007fdf3df5544f in QCoreApplication::exec () at /home/jarek/dev/qt-62-small/qtbase/src/corelib/kernel/qcoreapplication.cpp:1378
#49 0x00007fdf3eb73e3a in QGuiApplication::exec () at /home/jarek/dev/qt-62-small/qtbase/src/gui/kernel/qguiapplication.cpp:1860
#50 0x00007fdf3f68930f in QApplication::exec () at /home/jarek/dev/qt-62-small/qtbase/src/widgets/kernel/qapplication.cpp:2610
#51 0x000000000040e0e0 in main (argc=1, argv=0x7ffd4e36db98) at /home/jarek/dev/creator-6/src/app/main.cpp:771