2b49cf04a6
There is a few crashes happens in real life that frame callback is double-free'd and hit an assertion in wayland-client. e.g. https://bugs.kde.org/show_bug.cgi?id=450003 This is due to the WaylandEventThread and calls to QWaylandWindow::reset may free and unset the mFrameCallback at the same time. mFrameSyncMutex should be used to protect such access. Pick-to: 6.4 Change-Id: Ie01d08d07a2f10f70606ed1935caac09cb4f0382 Reviewed-by: David Edmundson <davidedmundson@kde.org>