From 60a81dfbd86338646e70739e34bca369d9c6753a Mon Sep 17 00:00:00 2001
From: Thomas Geymayer <tomgey@gmail.com>
Date: Fri, 7 Jun 2013 16:23:44 +0200
Subject: [PATCH] CanvasGroup: Fix handling z-index while moving child to
 front.

---
 simgear/canvas/elements/CanvasGroup.cxx | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/simgear/canvas/elements/CanvasGroup.cxx b/simgear/canvas/elements/CanvasGroup.cxx
index b290fb0e..3d29c77e 100644
--- a/simgear/canvas/elements/CanvasGroup.cxx
+++ b/simgear/canvas/elements/CanvasGroup.cxx
@@ -301,11 +301,13 @@ namespace canvas
     }
     else
     {
-      ChildList::iterator prev = child;
-      while(    prev != _children.begin()
-             && (--prev)->first->getIntValue("z-index", 0) > z_index)
+      ChildList::iterator prev = child,
+                          check = child;
+      while(    check != _children.begin()
+             && (--check)->first->getIntValue("z-index", 0) > z_index )
       {
         --index_new;
+        --prev;
       }
 
       if( index == index_new )