451c753e4a
The destroy effect currently relies on a monkey-patched property added from the map effect. However on X11 it is possible that we did no map animation for a window that is destroyed when the shell was restarted or had taken over from another WM. Just use the real MetaWindow property to avoid a warning in that case. https://bugzilla.gnome.org/show_bug.cgi?id=781471