[mutter] Fix typo

[Florian Müllner <fmuellner src gnome org>]

commit 7227b636c67a34dae0f26d6aa02c30ff93368273
Author: Rico Tzschichholz <ricotz t-online de>
Date:   Sun Oct 24 11:59:23 2010 +0200

    Fix typo

 src/compositor/meta-window-group.h |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/compositor/meta-window-group.h b/src/compositor/meta-window-group.h
index 9f0e122..4aa3dd0 100644
--- a/src/compositor/meta-window-group.h
+++ b/src/compositor/meta-window-group.h
@@ -38,7 +38,7 @@
 #define META_WINDOW_GROUP(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), META_TYPE_WINDOW_GROUP, MetaWindowGroup))
 #define META_WINDOW_GROUP_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), META_TYPE_WINDOW_GROUP, MetaWindowGroupClass))
 #define META_IS_WINDOW_GROUP(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), META_TYPE_WINDOW_GROUP))
-#define META_IS_WINDOW_GROU_CLASS(klass)  (G_TYPE_CHECK_CLASS_TYPE ((klass), META_TYPE_WINDOW_GROUP))
+#define META_IS_WINDOW_GROUP_CLASS(klass)  (G_TYPE_CHECK_CLASS_TYPE ((klass), META_TYPE_WINDOW_GROUP))
 #define META_WINDOW_GROUP_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), META_TYPE_WINDOW_GROUP, MetaWindowGroupClass))
 
 typedef struct _MetaWindowGroup        MetaWindowGroup;