From 1722150ee99999079e5d7c7d4565102e25e617a2 Mon Sep 17 00:00:00 2001
From: Stephen Halter <halter73@gmail.com>
Date: Wed, 28 Oct 2015 16:18:51 -0700
Subject: [PATCH] Do nothing in KestrelThread.Stop if libuv fails to load

This prevents DllNotFoundExceptions from being masked by NullReferenceExceptions
---
 .../Infrastructure/KestrelThread.cs                      | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/Microsoft.AspNet.Server.Kestrel/Infrastructure/KestrelThread.cs b/src/Microsoft.AspNet.Server.Kestrel/Infrastructure/KestrelThread.cs
index 6c26ec71b1..85a4b50621 100644
--- a/src/Microsoft.AspNet.Server.Kestrel/Infrastructure/KestrelThread.cs
+++ b/src/Microsoft.AspNet.Server.Kestrel/Infrastructure/KestrelThread.cs
@@ -30,6 +30,7 @@ namespace Microsoft.AspNet.Server.Kestrel
         private Queue<CloseHandle> _closeHandleRunning = new Queue<CloseHandle>();
         private object _workSync = new Object();
         private bool _stopImmediate = false;
+        private bool _initCompleted = false;
         private ExceptionDispatchInfo _closeError;
         private IKestrelTrace _log;
 
@@ -58,6 +59,11 @@ namespace Microsoft.AspNet.Server.Kestrel
 
         public void Stop(TimeSpan timeout)
         {
+            if (!_initCompleted)
+            {
+                return;
+            }
+
             Post(OnStop, null);
             if (!_thread.Join((int)timeout.TotalMilliseconds))
             {
@@ -195,8 +201,11 @@ namespace Microsoft.AspNet.Server.Kestrel
             catch (Exception ex)
             {
                 tcs.SetException(ex);
+                return;
             }
 
+            _initCompleted = true;
+
             try
             {
                 var ran1 = _loop.Run();