From 8caca2441e1352db81c5020c97d8e89cf0866c58 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mike=20Kr=C3=BCger?= <mkrueger@xamarin.com>
Date: Thu, 20 Sep 2012 07:33:08 +0200
Subject: [PATCH] Fixed possible null reference exception.

---
 .../Refactoring/VariableReferenceGraph.cs                    | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/ICSharpCode.NRefactory.CSharp/Refactoring/VariableReferenceGraph.cs b/ICSharpCode.NRefactory.CSharp/Refactoring/VariableReferenceGraph.cs
index 74a4c08523..29cb6767db 100644
--- a/ICSharpCode.NRefactory.CSharp/Refactoring/VariableReferenceGraph.cs
+++ b/ICSharpCode.NRefactory.CSharp/Refactoring/VariableReferenceGraph.cs
@@ -261,7 +261,10 @@ namespace ICSharpCode.NRefactory.CSharp.Refactoring
 						}
 					}
 				}
-				return nodeDict [startNode];
+				VariableReferenceNode result;
+				if (!nodeDict.TryGetValue (startNode, out result))
+					return new VariableReferenceNode ();
+				return result;
 			}
 		}