fix trailing whitespace everywhere

OpenRA.Game/Network/Connection.cs

@@ -1,7 +1,7 @@
 #region Copyright & License Information
 /*
  * Copyright 2007-2011 The OpenRA Developers (see AUTHORS)
- * This file is part of OpenRA, which is free software. It is made 
+ * This file is part of OpenRA, which is free software. It is made
  * available to you under the terms of the GNU General Public License
  * as published by the Free Software Foundation. For more information,
  * see COPYING.
@@ -204,7 +204,7 @@ namespace OpenRA.Network
 			using( new PerfSample( "Thread.Join" ))
 				t.Join();
 		}
-		
+
 		~NetworkConnection() { Dispose(); }
 	}
 }