[mutter] plugins/default: Fix compiler error

[Rui Matos <rtcm src gnome org>]

commit 3f3e3ce37e1d9ae47d33e21a2673b7835aacdf66
Author: Rui Matos <tiagomatos gmail com>
Date:   Fri Mar 9 13:16:58 2012 +0100

    plugins/default: Fix compiler error

 src/compositor/plugins/default.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/compositor/plugins/default.c b/src/compositor/plugins/default.c
index e78d617..d21f4d9 100644
--- a/src/compositor/plugins/default.c
+++ b/src/compositor/plugins/default.c
@@ -328,7 +328,7 @@ switch_workspace (MetaPlugin *plugin,
   ClutterAnimation *animation;
 
   screen = meta_plugin_get_screen (plugin);
-  stage = CLUTTER (meta_get_stage_for_screen (screen));
+  stage = meta_get_stage_for_screen (screen);
 
   meta_screen_get_size (screen,
                         &screen_width,