[mutter] MetaSurfaceActorWayland: Don't dereference surface before NULL check

[Jonas Ådahl <jadahl src gnome org>]

commit 5d1019691935bc24758aff4571d2ef5cae48720a
Author: Jonas Ådahl <jadahl gmail com>
Date:   Wed Jul 15 17:08:44 2015 +0800

    MetaSurfaceActorWayland: Don't dereference surface before NULL check
    
    Fixes regression introduced in ba7c524a18d73679ba1e2b8835254774f7726e8d.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=744453

 src/compositor/meta-surface-actor-wayland.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/compositor/meta-surface-actor-wayland.c b/src/compositor/meta-surface-actor-wayland.c
index 865e041..2786a5a 100644
--- a/src/compositor/meta-surface-actor-wayland.c
+++ b/src/compositor/meta-surface-actor-wayland.c
@@ -108,10 +108,10 @@ meta_surface_actor_wayland_get_scale (MetaSurfaceActorWayland *actor)
 {
    MetaSurfaceActorWaylandPrivate *priv = meta_surface_actor_wayland_get_instance_private (actor);
    MetaWaylandSurface *surface = priv->surface;
-   MetaWindow *window = surface->window;
+   MetaWindow *window = NULL;
    int output_scale = 1;
 
-   if (!priv->surface)
+   if (!surface)
      return 1;
 
    while (surface)