[mutter] screen: Fix a copy/paste error from the fullscreen tracking

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

commit eefa62bcd4fa7749bb6653a5840c53cf8c52ce40
Author: Jasper St. Pierre <jstpierre mecheye net>
Date:   Mon Mar 18 16:29:25 2013 -0400

    screen: Fix a copy/paste error from the fullscreen tracking
    
    This was causing a warning on shutdown.

 src/core/screen.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/core/screen.c b/src/core/screen.c
index a1fd12c..3bab340 100644
--- a/src/core/screen.c
+++ b/src/core/screen.c
@@ -1006,7 +1006,7 @@ meta_screen_free (MetaScreen *screen,
   if (screen->work_area_later != 0)
     g_source_remove (screen->work_area_later);
   if (screen->check_fullscreen_later != 0)
-    g_source_remove (screen->work_area_later);
+    g_source_remove (screen->check_fullscreen_later);
 
   if (screen->monitor_infos)
     g_free (screen->monitor_infos);