Fix segfault when closing widget and destroying window in QDialog::done

On OpenSUSE we seem to get an Enter event after or while the QWindow is
closed, and that appears to reset the currentMouseWindow after we
cleared it in QWindowPrivate::destroy. Apply a workaround similar to the
focus_window to make sure that currentMouseWindow and
currentMousePressWindow don't point to destroyed objects.

Change-Id: I61afdaa7d8d1d437058624012319460be2f2567f
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
(cherry picked from commit e9e8d67e31b8b6a8348b5dae3225be2dbd87ffd2)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>

0 files changed, 0 insertions, 0 deletions