fix trailing whitespace everywhere

OpenRA.Game/Widgets/ImageWidget.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.
@@ -43,7 +43,7 @@ namespace OpenRA.Widgets
 			var name = GetImageName();
 			var collection = GetImageCollection();
 			WidgetUtils.DrawRGBA(
-				ChromeProvider.GetImage(collection, name), 
+				ChromeProvider.GetImage(collection, name),
 				RenderOrigin);
 		}
 	}