[mutter] default plugin: Fix workspace switch type error

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

commit ce99362094fb284d603cc3320ddd515a89e6bac8
Author: Jonas Ådahl <jadahl gmail com>
Date:   Mon Feb 3 23:00:12 2014 +0100

    default plugin: Fix workspace switch type error
    
    Signed-off-by: Jonas Ådahl <jadahl gmail com>
    
    https://bugzilla.gnome.org/show_bug.cgi?id=723563

 src/compositor/plugins/default.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)
---
diff --git a/src/compositor/plugins/default.c b/src/compositor/plugins/default.c
index 3481398..2e87cf9 100644
--- a/src/compositor/plugins/default.c
+++ b/src/compositor/plugins/default.c
@@ -408,9 +408,11 @@ switch_workspace (MetaPlugin *plugin,
       MetaWindowActor *window_actor = l->data;
       ActorPrivate    *apriv       = get_actor_private (window_actor);
       ClutterActor    *actor       = CLUTTER_ACTOR (window_actor);
+      MetaWorkspace   *workspace;
       gint             win_workspace;
 
-      win_workspace = meta_window_get_workspace (meta_window_actor_get_meta_window (window_actor));
+      workspace = meta_window_get_workspace (meta_window_actor_get_meta_window (window_actor));
+      win_workspace = meta_workspace_index (workspace);
 
       if (win_workspace == to || win_workspace == from)
         {