From fcd870f77d8c1ce0411ddaa642b321a253fcf860 Mon Sep 17 00:00:00 2001
From: Matt Ward <ward.matt@gmail.com>
Date: Sun, 27 Nov 2011 10:50:33 +0000
Subject: [PATCH] Fix argument null exception in caret references renderer when
 finding references and last resolve result has been set to null.

---
 .../AvalonEdit.AddIn/Src/CaretReferencesRenderer.cs             | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/AddIns/DisplayBindings/AvalonEdit.AddIn/Src/CaretReferencesRenderer.cs b/src/AddIns/DisplayBindings/AvalonEdit.AddIn/Src/CaretReferencesRenderer.cs
index 13c17a0ff4..5122248643 100644
--- a/src/AddIns/DisplayBindings/AvalonEdit.AddIn/Src/CaretReferencesRenderer.cs
+++ b/src/AddIns/DisplayBindings/AvalonEdit.AddIn/Src/CaretReferencesRenderer.cs
@@ -141,6 +141,8 @@ namespace ICSharpCode.AvalonEdit.AddIn
 		/// </summary>
 		List<Reference> FindReferencesInCurrentFile(ResolveResult resolveResult)
 		{
+			if (resolveResult == null)
+				return null;
 			var cancellationTokenSource = new CancellationTokenSource();
 			using (new Timer(
 				delegate {