[mutter] backend: Destroy stage when destroying backend

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

commit c3aa32987a15ba22709cf9b34fa3480af14b354b
Author: Jonas Ådahl <jadahl gmail com>
Date:   Fri Mar 12 08:41:02 2021 +0100

    backend: Destroy stage when destroying backend
    
    Otherwise we leak it.
    
    Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1775>

 src/backends/meta-backend.c | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/src/backends/meta-backend.c b/src/backends/meta-backend.c
index aa256f56a5..f0f9d8077d 100644
--- a/src/backends/meta-backend.c
+++ b/src/backends/meta-backend.c
@@ -247,6 +247,7 @@ meta_backend_dispose (GObject *object)
 #endif
 
   g_clear_pointer (&priv->default_seat, clutter_seat_destroy);
+  g_clear_pointer (&priv->stage, clutter_actor_destroy);
   g_clear_pointer (&priv->clutter_backend, clutter_backend_destroy);
 
   G_OBJECT_CLASS (meta_backend_parent_class)->dispose (object);