[mutter] window-group: Skip the unredirected window

[Jasper St. Pierre <jstpierre src gnome org>]

commit fbcddbcf3e4971ec2a44f829a113a99e50579b78
Author: Jasper St. Pierre <jstpierre mecheye net>
Date:   Wed Aug 29 15:17:14 2012 -0300

    window-group: Skip the unredirected window
    
    We shouldn't need to process it here.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=677116

 src/compositor/meta-window-group.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/src/compositor/meta-window-group.c b/src/compositor/meta-window-group.c
index 885bcf1..becb336 100644
--- a/src/compositor/meta-window-group.c
+++ b/src/compositor/meta-window-group.c
@@ -246,6 +246,9 @@ meta_window_group_paint (ClutterActor *actor)
       if (!CLUTTER_ACTOR_IS_VISIBLE (l->data))
         continue;
 
+      if (l->data == info->unredirected_window)
+        continue;
+
       /* If an actor has effects applied, then that can change the area
        * it paints and the opacity, so we no longer can figure out what
        * portion of the actor is obscured and what portion of the screen