[gtk+] Be more careful when parsing gtk-decoration-layout

[Matthias Clasen <matthiasc src gnome org>]

commit 260237240172b804da41b1f22d8b8006363c5150
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon Jan 6 17:05:53 2014 -0500

    Be more careful when parsing gtk-decoration-layout
    
    When the string is empty, breaking it at : will not give
    us two tokens, and we were parsing garbage, leading to crash.
    https://bugzilla.gnome.org/show_bug.cgi?id=721635

 gtk/gtkheaderbar.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtkheaderbar.c b/gtk/gtkheaderbar.c
index f466caf..bbe6faa 100644
--- a/gtk/gtkheaderbar.c
+++ b/gtk/gtkheaderbar.c
@@ -359,7 +359,7 @@ _gtk_header_bar_update_window_buttons (GtkHeaderBar *bar)
           int n_children = 0;
 
           if (tokens[i] == NULL)
-            continue;
+            break;
 
           t = g_strsplit (tokens[i], ",", -1);