[gtk+] Add a forgotten break in render_border

[Matthias Clasen <matthiasc src gnome org>]

commit 6400eeba35e4eb52660b1449bcfa0df8aabd7864
Author: Matthias Clasen <mclasen redhat com>
Date:   Thu Nov 29 22:42:36 2012 -0500

    Add a forgotten break in render_border
    
    The GTK_BORDER_STYLE_DOUBLE case was clearly not meant to
    fall through to the subsequent cases, yet it did.
    Found by Coverity.

 gtk/gtkthemingengine.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/gtk/gtkthemingengine.c b/gtk/gtkthemingengine.c
index 4a803cd..2d9152c 100644
--- a/gtk/gtkthemingengine.c
+++ b/gtk/gtkthemingengine.c
@@ -1656,6 +1656,7 @@ render_border (cairo_t       *cr,
                                      2 * other_border[GTK_CSS_LEFT]);
             render_frame_fill (cr, &other_box, other_border, colors, dont_draw);
           }
+          break;
         case GTK_BORDER_STYLE_GROOVE:
         case GTK_BORDER_STYLE_RIDGE:
           {