[nemo] Crasher fix

[Anders Rune Jensen <arj src gnome org>]

commit cfe5cc0b766dc609bc03c80f03c7a55e679e4750
Author: Anders Rune Jensen <anders iola dk>
Date:   Fri May 29 00:24:57 2009 +0200

    Crasher fix
---
 metadata/MetadataStore.cs |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)

diff --git a/metadata/MetadataStore.cs b/metadata/MetadataStore.cs
index 878b93e..9e2938b 100644
--- a/metadata/MetadataStore.cs
+++ b/metadata/MetadataStore.cs
@@ -782,7 +782,12 @@ namespace Nemo
 				
 			for (int i = 0; i < a.Length; ++i)
 			{
-				if (a[i].Equals(b[i])) continue;
+			  
+			  if (i >= b.Length)
+			    return -1;
+
+				if (a[i].Equals(b[i])) 
+				  continue;
 
 				bool w = Int32.TryParse(a.Substring(i, 1), out y), x = Int32.TryParse(b.Substring(i, 1), out z);
 				bool bothNumbers = w && x, bothNotNumbers = !w && !x;