From 16b2b375319b4ce36689fa54b33737c657f63c68 Mon Sep 17 00:00:00 2001
From: Louis DeJardin <Louis.DeJardin@microsoft.com>
Date: Tue, 27 Jul 2010 15:42:29 -0700
Subject: [PATCH] Protect menu item comparer from null route values

Prevents a null ysod in rare cases

--HG--
branch : dev
---
 src/Orchard/UI/Navigation/MenuItemComparer.cs | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/Orchard/UI/Navigation/MenuItemComparer.cs b/src/Orchard/UI/Navigation/MenuItemComparer.cs
index 256596f1e..2b4ee728b 100644
--- a/src/Orchard/UI/Navigation/MenuItemComparer.cs
+++ b/src/Orchard/UI/Navigation/MenuItemComparer.cs
@@ -40,7 +40,12 @@ namespace Orchard.UI.Navigation {
             }
             if (obj.RouteValues != null) {
                 foreach (var item in obj.RouteValues) {
-                    hash ^= item.Key.GetHashCode() ^ item.Value.GetHashCode();
+                    if (item.Key != null) {
+                        hash ^= item.Key.GetHashCode();
+                    }
+                    if (item.Value != null) {
+                        hash ^= item.Value.GetHashCode();
+                    }
                 }
             }
             return hash;