Sebastian Keller b41c4aec26 wayland/gtk-shell: Fix MetaWaylandGtkSurface leak on surface destroy
The MetaWaylandSurface corresponding to a MetaWaylandGtkSurface can be
destroyed before the MetaWaylandGtkSurface is destroyed. In its destroy
function MetaWaylandSurface however was unsetting the destructor of the
correspnding resource along with the gtk_surface1 interface
implementation. This was done to prevent further gtk_surface1 requests
on a NULLed MetaWaylandSurface, if it has been destroyed before the
MetaWaylandGtkSurface.

It would be enough to just unset the resource implementation, while
keeping the destructor to fix this leak. However the following commit
will rely on the implementation being available after the
MetaWaylandSurface has been destroyed. So instead introduce NULL checks
for all functions that can be called on the gtk_surface1 interface and
do not unset the implementation.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1307>
2021-01-29 16:21:16 +00:00
..
2021-01-28 20:05:23 +00:00