[mutter] clutter/actor: Check for clones in update_default_paint_volume()

[Marge Bot <marge-bot src gnome org>]

commit e7a64db51aa2f5bc3e3f36c56e24ed86b51bea68
Author: Robert Mader <robert mader collabora com>
Date:   Tue Jul 26 22:38:14 2022 +0200

    clutter/actor: Check for clones in update_default_paint_volume()
    
    This does not fix any known bug but should help ensuring correctness
    when clones are used.
    
    Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2530>

 clutter/clutter/clutter-actor.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
---
diff --git a/clutter/clutter/clutter-actor.c b/clutter/clutter/clutter-actor.c
index d6c798647f..1a04a4f9f0 100644
--- a/clutter/clutter/clutter-actor.c
+++ b/clutter/clutter/clutter-actor.c
@@ -5769,7 +5769,9 @@ clutter_actor_update_default_paint_volume (ClutterActor       *self,
            * allocation, because apparently some code above Clutter allows
            * them.
            */
-          if (!CLUTTER_ACTOR_IS_MAPPED (child) || !clutter_actor_has_allocation (child))
+          if ((!CLUTTER_ACTOR_IS_MAPPED (child) &&
+               !clutter_actor_has_mapped_clones (child)) ||
+              !clutter_actor_has_allocation (child))
             continue;
 
           child_volume = clutter_actor_get_transformed_paint_volume (child, self);