[mutter] window-group: Remove an unnecessary assignment

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

commit 25d3432eee07bbbac546955c3a16591da2ad7df8
Author: Jasper St. Pierre <jstpierre mecheye net>
Date:   Thu Apr 26 09:50:40 2012 -0400

    window-group: Remove an unnecessary assignment
    
    Clang warns about this.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=674876

 src/compositor/meta-window-group.c |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)
---
diff --git a/src/compositor/meta-window-group.c b/src/compositor/meta-window-group.c
index b786765..4ec71f3 100644
--- a/src/compositor/meta-window-group.c
+++ b/src/compositor/meta-window-group.c
@@ -209,7 +209,6 @@ meta_window_group_paint (ClutterActor *actor)
       if (META_IS_WINDOW_ACTOR (l->data))
         {
           MetaWindowActor *window_actor = l->data;
-          window_actor = l->data;
           meta_window_actor_reset_visible_regions (window_actor);
         }
       else if (META_IS_BACKGROUND_ACTOR (l->data))