From 207a17712e995b7f62aa2749434889f32899612f Mon Sep 17 00:00:00 2001
From: Markus Ewald <cygon@nuclex.org>
Date: Fri, 8 Feb 2019 18:27:15 +0000
Subject: [PATCH] Fixed a potential NullReferenceException (though I'm thinking
 about phasing out the method it's happening in entirely)

git-svn-id: file:///srv/devel/repo-conversion/nusu@335 d2e56fa2-650e-0410-a79f-9358c0239efd
---
 Source/Threading/ThreadRunner.cs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Source/Threading/ThreadRunner.cs b/Source/Threading/ThreadRunner.cs
index b86e9ab..d16be48 100644
--- a/Source/Threading/ThreadRunner.cs
+++ b/Source/Threading/ThreadRunner.cs
@@ -395,7 +395,10 @@ namespace Nuclex.Support.Threading {
     public void ThrowIfBackgroundOperationCancelled() {
       IRunner currentRunner = this.currentRunner;
       if(currentRunner != null) {
-        currentRunner.CancellationTokenSource.Token.ThrowIfCancellationRequested();
+        CancellationTokenSource source = currentRunner.CancellationTokenSource;
+        if(source != null) {
+          source.Token.ThrowIfCancellationRequested();
+        }
       }
     }