Qt4 context menu crashes
Start playing some video, right click on the video, and select Quit:
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::begin: Paint device returned engine == 0, type: 1
LibVLC fatal error locking mutex (22) in thread 3055008656 at ../../src/misc/threads.c:355 in vlc_mutex_lock
/home/remi/videolan/vlc/build/src/.libs/libvlccore.so.1[0xb7f4f5e9]
/home/remi/videolan/vlc/build/src/.libs/libvlccore.so.1[0xb7f4f68b]
/home/remi/videolan/vlc/build/src/.libs/libvlccore.so.1(vlc_mutex_lock+0x4a)[0xb7f4f9ba]
/home/remi/videolan/vlc/build/src/.libs/libvlccore.so.1(__var_DelCallback+0x31)[0xb7f60811]
./modules/gui/qt4/.libs/libqt4_plugin.so(_ZN16MainInputManager11customEventEP6QEvent+0x9d)[0xb731222d]
/usr/lib/libQtCore.so.4(_ZN7QObject5eventEP6QEvent+0x317)[0xb71c5957]
/usr/lib/libQtGui.so.4(_ZN19QApplicationPrivate13notify_helperEP7QObjectP6QEvent+0xbc)[0xb63d079c]
/usr/lib/libQtGui.so.4(_ZN12QApplication6notifyEP7QObjectP6QEvent+0xbe)[0xb63d861e]
/usr/lib/libQtCore.so.4(_ZN16QCoreApplication14notifyInternalEP7QObjectP6QEvent+0xb1)[0xb71b60e1]
/usr/lib/libQtCore.so.4(_ZN23QCoreApplicationPrivate16sendPostedEventsEP7QObjectiP11QThreadData+0x2a5)[0xb71b6d65]
/usr/lib/libQtCore.so.4(_ZN16QCoreApplication16sendPostedEventsEP7QObjecti+0x2d)[0xb71b6f5d]
/usr/lib/libQtCore.so.4[0xb71e099f]
/usr/lib/libglib-2.0.so.0(g_main_context_dispatch+0x1e8)[0xb6e051b8]
/usr/lib/libglib-2.0.so.0[0xb6e08853]
/usr/lib/libglib-2.0.so.0(g_main_context_iteration+0x71)[0xb6e08a11]
/usr/lib/libQtCore.so.4(_ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE+0x58)[0xb71e05e8]
/usr/lib/libQtGui.so.4[0xb6469d75]
/usr/lib/libQtCore.so.4(_ZN10QEventLoop13processEventsE6QFlagsINS_17ProcessEventsFlagEE+0x4a)[0xb71b47aa]
/usr/lib/libQtCore.so.4(_ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE+0xea)[0xb71b496a]
/usr/lib/libQtCore.so.4(_ZN16QCoreApplication4execEv+0xb5)[0xb71b7025]
Error message: Argument invalide
Abandon