[gnome-shell] StShadowHelper: properly use the actor's box to paint the shadow

[Rui Matos <rtcm src gnome org>]

commit 3e93a1bdd6213e4d0ddf665452a6562c989030ae
Author: Rui Matos <tiagomatos gmail com>
Date:   Wed Jun 22 20:57:17 2016 +0200

    StShadowHelper: properly use the actor's box to paint the shadow
    
    We're using an unitialized box resulting in an undefined shadow box
    size.
    
    _st_paint_shadow_with_opacity() already computes the shadow's bounding
    box from the source actor's box so we just need to pass that along.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=767954

 src/st/st-shadow.c |    7 +------
 1 files changed, 1 insertions(+), 6 deletions(-)
---
diff --git a/src/st/st-shadow.c b/src/st/st-shadow.c
index 49e411c..dbd3f8e 100644
--- a/src/st/st-shadow.c
+++ b/src/st/st-shadow.c
@@ -287,13 +287,8 @@ st_shadow_helper_paint (StShadowHelper  *helper,
                         ClutterActorBox *actor_box,
                         guint8           paint_opacity)
 {
-  ClutterActorBox allocation;
-  float width, height;
-
-  clutter_actor_box_get_size (actor_box, &width, &height);
-
   _st_paint_shadow_with_opacity (helper->shadow,
                                  helper->pipeline,
-                                 &allocation,
+                                 actor_box,
                                  paint_opacity);
 }