From 10d7043e2453b7dae7cbd704fba87007ef876898 Mon Sep 17 00:00:00 2001
From: Eusebiu Marcu <marcueusebiu@gmail.com>
Date: Tue, 22 Mar 2011 09:59:35 +0200
Subject: [PATCH] Return false when the mapping is not found

---
 ICSharpCode.Decompiler/CodeMappings.cs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/ICSharpCode.Decompiler/CodeMappings.cs b/ICSharpCode.Decompiler/CodeMappings.cs
index 7945a8f4b..a67385fa5 100644
--- a/ICSharpCode.Decompiler/CodeMappings.cs
+++ b/ICSharpCode.Decompiler/CodeMappings.cs
@@ -229,6 +229,11 @@ namespace ICSharpCode.Decompiler
 			
 			var methodMappings = codeMappings[typeName];
 			var maping = methodMappings.Find(m => m.MetadataToken == token);
+			
+			if (maping == null) {
+				return null;
+			}
+			
 			// try find an exact match
 			var map = maping.MemberCodeMappings.Find(m => m.ILInstructionOffset.From <= ilOffset && ilOffset < m.ILInstructionOffset.To);