Unplugging monitor may crash application

#0  0x00007ffff72466d2 in QScopedPointer<QObjectData, QScopedPointerDeleter<QObjectData> >::data (this=0x8) at ../../include/QtCore/../../src/corelib/tools/qscopedpointer.h:135
#1  0x00007ffff729ce9b in qGetPtrHelper<QScopedPointer<QObjectData> > (p=...) at ../../include/QtCore/../../src/corelib/global/qglobal.h:961
#2  0x00007ffff729ceee in QScreen::d_func (this=0x0) at kernel/qscreen.h:59
#3  0x00007ffff729be64 in QScreen::handle (this=0x0) at kernel/qscreen.cpp:84
#4  0x00007ffff726d107 in QWindowPrivate::setCursor (this=0x6611a0, newCursor=0x0) at kernel/qwindow.cpp:2396
#5  0x00007ffff726cfa5 in QWindow::unsetCursor (this=0x7fffffffdb70) at kernel/qwindow.cpp:2365
#6  0x00007ffff7a5a060 in QQuickItemPrivate::derefWindow (this=0x79cdf0) at items/qquickitem.cpp:2829
#7  0x00007ffff7a5a1c0 in QQuickItemPrivate::derefWindow (this=0x79c110) at items/qquickitem.cpp:2854
#8  0x00007ffff7a5a1c0 in QQuickItemPrivate::derefWindow (this=0x7963f0) at items/qquickitem.cpp:2854
#9  0x00007ffff7a5a1c0 in QQuickItemPrivate::derefWindow (this=0x789eb0) at items/qquickitem.cpp:2854
#10 0x00007ffff7a58e56 in QQuickItem::setParentItem (this=0x789e80, parentItem=0x0) at items/qquickitem.cpp:2539
#11 0x00007ffff7a579cc in QQuickItem::~QQuickItem (this=0x789e80, __in_chrg=<optimized out>) at items/qquickitem.cpp:2240
#12 0x00007ffff7ad3935 in QQmlPrivate::QQmlElement<QQuickItem>::~QQmlElement (this=0x789e80, __in_chrg=<optimized out>)
    at ../../../qtdeclarative/src/qml/qml/qqmlprivate.h:98
#13 0x00007ffff7ad396e in QQmlPrivate::QQmlElement<QQuickItem>::~QQmlElement (this=0x789e80, __in_chrg=<optimized out>)
    at ../../../qtdeclarative/src/qml/qml/qqmlprivate.h:98
#14 0x00007ffff7b6806c in QQuickView::~QQuickView (this=0x7fffffffdb70, __in_chrg=<optimized out>) at items/qquickview.cpp:225
#15 0x0000000000401b77 in main (argc=1, argv=0x7fffffffdcb8) at main.cpp:41