From 76ca01a42076863e9909eb215ceca4a88ef09ac6 Mon Sep 17 00:00:00 2001
From: MaxXor <admin@maxxor.org>
Date: Wed, 18 Mar 2015 18:12:45 +0100
Subject: [PATCH] Minor null reference fix

---
 Server/Core/Helper/UPnP.cs | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/Server/Core/Helper/UPnP.cs b/Server/Core/Helper/UPnP.cs
index 079f93c0..aa65dde9 100644
--- a/Server/Core/Helper/UPnP.cs
+++ b/Server/Core/Helper/UPnP.cs
@@ -30,7 +30,10 @@ public static void ForwardPort(ushort port)
                         finally
                         {
                             // Placed in here to make sure that a failed TcpClient will never linger!
-                            c.Close();
+                            if (c != null)
+                            {
+                                c.Close();
+                            }
                         }
 
                         if (endPoint != null)
@@ -48,8 +51,9 @@ public static void ForwardPort(ushort port)
                     }
                 } while (retry < 5);
 
-                // As by the original UPnP, if we can't successfully connect (above),
-                //   shouldn't we just "return;"?
+                if (string.IsNullOrEmpty(ipAddr)) // If we can't successfully connect
+                    return;
+
                 try
                 {
                     IStaticPortMappingCollection portMap = new UPnPNAT().StaticPortMappingCollection;