[mutter] Fix broken META_IS_SCREEN macro

[Owen Taylor <otaylor src gnome org>]

commit bd2e221da34f72dbcc6a1c0dc8fdae058ec93014
Author: Owen W. Taylor <otaylor fishsoup net>
Date:   Tue Sep 1 09:38:40 2009 -0400

    Fix broken META_IS_SCREEN macro
    
    Should use META_TYPE_SCREEN not META_SCREEN_TYPE.

 src/include/screen.h |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/include/screen.h b/src/include/screen.h
index e16fe4d..d3f816e 100644
--- a/src/include/screen.h
+++ b/src/include/screen.h
@@ -30,7 +30,7 @@
 #define META_TYPE_SCREEN            (meta_screen_get_type ())
 #define META_SCREEN(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), META_TYPE_SCREEN, MetaScreen))
 #define META_SCREEN_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass),  META_TYPE_SCREEN, MetaScreenClass))
-#define META_IS_SCREEN(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), META_SCREEN_TYPE))
+#define META_IS_SCREEN(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), META_TYPE_SCREEN))
 #define META_IS_SCREEN_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass),  META_TYPE_SCREEN))
 #define META_SCREEN_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),  META_TYPE_SCREEN, MetaScreenClass))