[45] clutter: Fix memory leak when running in fullscreen
clutter_stage_do_paint_view()
only gets called when leaving fullscreen
and by that time enough calls to
clutter_actor_get_transformed_paint_volume()
can make the underlying
GArray grow to a large size.
To fix this, we call call the cleanup function in
clutter_stage_finish_layout()
to make it happen every frame.
Co-authored-by: Sebastian Keller skeller@gnome.org
Closes: #3191 (closed)