Crash in bin editor

To reproduce:
1) Open a qtcreator project
2) Using "Open File With..." point to src/plugins/bineditor/bineditor.pro
3) Choose to open that file with Binary Editor
4) After the editor is opened, press the arrow down key - crash

Call stack:
0 QString::operator= qstring.cpp 1411 0xb6f34b40
1 BinEditorDocument::open bineditorplugin.cpp 226 0xb1649272
2 BinEditorDocument::provideNewRange bineditorplugin.cpp 267 0xb16498a3
3 BinEditorDocument::qt_static_metacall bineditorplugin.moc 119 0xb164782d
4 QMetaObject::activate qobject.cpp 3547 0xb701cba9
5 BINEditor::BinEditor::newRangeRequested moc_bineditor.cpp 265 0xb16590f3
6 BINEditor::BinEditor::event bineditor.cpp 1055 0xb1650cb2
7 QApplicationPrivate::notify_helper qapplication.cpp 4557 0xb749d548
8 QApplication::notify qapplication.cpp 3998 0xb749b165
9 QCoreApplication::notifyInternal qcoreapplication.cpp 915 0xb7001246
10 QCoreApplication::sendSpontaneousEvent qcoreapplication.h 234 0xb749fca1
11 qt_sendSpontaneousEvent qapplication.cpp 5555 0xb749d8a9
12 QKeyMapper::sendKeyEvent qkeymapper_x11.cpp 1866 0xb755e3a0
13 QKeyMapperPrivate::translateKeyEvent qkeymapper_x11.cpp 1836 0xb755e0ad
14 QApplication::x11ProcessEvent qapplication_x11.cpp 3523 0xb752d078
15 QEventDispatcherX11::processEvents qeventdispatcher_x11.cpp 132 0xb75600a8
16 QEventLoop::processEvents qeventloop.cpp 149 0xb6ffea89
17 QEventLoop::exec qeventloop.cpp 204 0xb6ffebf7
18 QCoreApplication::exec qcoreapplication.cpp 1187 0xb70018c2
19 QApplication::exec qapplication.cpp 3818 0xb749aac6
20 main main.cpp 435 0x805172f