[mutter] meta-surface-actor-x11: Fix unredirect heuristic

[Adel Gadllah <agadllah src gnome org>]

commit cd32e4a68a939f5f8aed38ce402a0f5b58aa9053
Author: Adel Gadllah <adel gadllah gmail com>
Date:   Sat Oct 11 22:55:26 2014 +0200

    meta-surface-actor-x11: Fix unredirect heuristic
    
    Damage coordinates are relative to the drawable not to the screen. So we
    have to check whether x and y are 0 and not window_rect.x/y otherwise the
    herustic will never trigger for windows on monitors whos x and y are not 0.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=738271

 src/compositor/meta-surface-actor-x11.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/compositor/meta-surface-actor-x11.c b/src/compositor/meta-surface-actor-x11.c
index 8af5ca2..4aa7ecd 100644
--- a/src/compositor/meta-surface-actor-x11.c
+++ b/src/compositor/meta-surface-actor-x11.c
@@ -193,8 +193,8 @@ meta_surface_actor_x11_process_damage (MetaSurfaceActor *actor,
       MetaRectangle window_rect;
       meta_window_get_frame_rect (priv->window, &window_rect);
 
-      if (window_rect.x == x &&
-          window_rect.y == y &&
+      if (x == 0 &&
+          y == 0 &&
           window_rect.width == width &&
           window_rect.height == height)
         priv->full_damage_frames_count++;