[mutter] meta_display_get_tab_list(): Fix leaked GSList

[Rui Matos <rtcm src gnome org>]

commit 423bda908efdecf298761f9d1043c8bca5d018d0
Author: Pavel Vasin <rat4vier gmail com>
Date:   Fri Mar 23 12:45:50 2012 +0400

    meta_display_get_tab_list(): Fix leaked GSList
    
    https://bugzilla.gnome.org/show_bug.cgi?id=672640

 src/core/display.c |    7 +++++--
 1 files changed, 5 insertions(+), 2 deletions(-)
---
diff --git a/src/core/display.c b/src/core/display.c
index ac1cab9..8f1fe3c 100644
--- a/src/core/display.c
+++ b/src/core/display.c
@@ -4654,12 +4654,13 @@ meta_display_get_tab_list (MetaDisplay   *display,
   tab_list = g_list_reverse (tab_list);
 
   {
-    GSList *tmp;
+    GSList *windows, *tmp;
     MetaWindow *l_window;
 
-    tmp = meta_display_list_windows (display, META_LIST_DEFAULT);
+    windows = meta_display_list_windows (display, META_LIST_DEFAULT);
 
     /* Go through all windows */
+    tmp = windows;
     while (tmp != NULL)
       {
         l_window=tmp->data;
@@ -4675,6 +4676,8 @@ meta_display_get_tab_list (MetaDisplay   *display,
 
         tmp = tmp->next;
       } /* End while tmp!=NULL */
+
+    g_slist_free (windows);
   }
   
   return tab_list;