[gtk+] themingengine: fix a typo

[Cosimo Cecchi <cosimoc src gnome org>]

commit ae60f00ba421730723a6b6db59a9eceea0f507db
Author: Cosimo Cecchi <cosimoc gnome org>
Date:   Mon Nov 28 17:40:32 2011 -0500

    themingengine: fix a typo

 gtk/gtkthemingengine.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtkthemingengine.c b/gtk/gtkthemingengine.c
index b861f91..5273f46 100644
--- a/gtk/gtkthemingengine.c
+++ b/gtk/gtkthemingengine.c
@@ -1488,7 +1488,7 @@ render_background_internal (GtkThemingEngine *engine,
   default:
     bg_x = border.left;
     bg_y = border.top;
-    bg_width = width - border.left - border.left;
+    bg_width = width - border.left - border.right;
     bg_height = height - border.top - border.bottom;
     break;
   }