[mutter] meta-actor-window: Use G_UNLIKELY for TFP check

[Adel Gadllah <agadllah src gnome org>]

commit 64c37852b17b2be4e801257b1eda4a1f950eae54
Author: Adel Gadllah <adel gadllah gmail com>
Date:   Sat Oct 23 22:31:37 2010 +0200

    meta-actor-window: Use G_UNLIKELY for TFP check
    
    This is just a microptimization, as we pretty much always use
    TFP (and do the check every time we set a pixmap),
    we can let gcc generate better code here.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=633002

 src/compositor/meta-window-actor.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/compositor/meta-window-actor.c b/src/compositor/meta-window-actor.c
index f08f043..c737d6d 100644
--- a/src/compositor/meta-window-actor.c
+++ b/src/compositor/meta-window-actor.c
@@ -1821,8 +1821,8 @@ check_needs_pixmap (MetaWindowActor *self)
        * do it here.
        * See: http://bugzilla.clutter-project.org/show_bug.cgi?id=2236
        */
-      if (!clutter_glx_texture_pixmap_using_extension (
-                                  CLUTTER_GLX_TEXTURE_PIXMAP (priv->actor)))
+      if (G_UNLIKELY (!clutter_glx_texture_pixmap_using_extension (
+                                  CLUTTER_GLX_TEXTURE_PIXMAP (priv->actor))))
         g_warning ("NOTE: Not using GLX TFP!\n");
 
       g_object_get (priv->actor,