[gtk+] Bail out of window move/resize early if no change

[Alexander Larsson <alexl src gnome org>]

commit 6716d46393039c0a0691306d65a1e1921a6957fe
Author: Alexander Larsson <alexl redhat com>
Date:   Mon Sep 14 13:09:07 2009 +0200

    Bail out of window move/resize early if no change
    
    This is not all that uncommon in size_allocate, so we want
    to optimize this case.

 gdk/gdkwindow.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)
---
diff --git a/gdk/gdkwindow.c b/gdk/gdkwindow.c
index 78911ae..3560001 100644
--- a/gdk/gdkwindow.c
+++ b/gdk/gdkwindow.c
@@ -6990,6 +6990,14 @@ gdk_window_move_resize_internal (GdkWindow *window,
       return;
     }
 
+  /* Bail early if no change */
+  if (private->width == width &&
+      private->height == height &&
+      (!with_move ||
+       (private->x == x &&
+	private->y == y)))
+    return;
+
   /* Handle child windows */
 
   expose = FALSE;