[gnome-themes-standard] engine: fix a leftover

[Cosimo Cecchi <cosimoc src gnome org>]

commit 2958ca53e83482e32854c82b093aa764aecc08a8
Author: Cosimo Cecchi <cosimoc gnome org>
Date:   Sat Feb 4 00:20:50 2012 -0500

    engine: fix a leftover

 src/adwaita_engine.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/adwaita_engine.c b/src/adwaita_engine.c
index 760ac95..3217f20 100644
--- a/src/adwaita_engine.c
+++ b/src/adwaita_engine.c
@@ -251,7 +251,7 @@ render_notebook_extension (GtkThemingEngine *engine,
   else if (gap_side == GTK_POS_TOP)
     x -= border_width / 2;
 
-  width -= border_width / 2;
+  width -= border_width;
 
   cairo_translate (cr, x, y);
   cairo_rotate (cr, angle);