st/widget: Adjust to changes to get_transformed_paint_volume() in mutter

This method is now transfer full.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/3045>

diff --git a/src/st/st-widget.c b/src/st/st-widget.c
index 6c6fd3a3fa9dd6f723c8e0e0ad087c7cb79362d5..807d8d0eb033ab3a332a4c06877de067b8f17432 100644 (file)
--- a/src/st/st-widget.c
+++ b/src/st/st-widget.c
@@ -829,7 +829,7 @@ st_widget_get_paint_volume (ClutterActor *self,
            child != NULL;
            child = clutter_actor_get_next_sibling (child))
         {
-          const ClutterPaintVolume *child_volume;
+          g_autoptr (ClutterPaintVolume) child_volume = NULL;
 
           if (!clutter_actor_is_visible (child))
             continue;