Don't require a WorldRenderer to draw non-world-rendering widgets.

OpenRA.Game/Widgets/ScrollingTextWidget.cs

@@ -1,4 +1,4 @@
-#region Copyright & License Information
+#region Copyright & License Information
 /*
  * Copyright 2007-2010 The OpenRA Developers (see AUTHORS)
  * This file is part of OpenRA, which is free software. It is made 
@@ -101,7 +101,7 @@ namespace OpenRA.Widgets
 			Text = Text.Replace("\r", "");
 		}
 
-		public override void DrawInner( WorldRenderer wr )
+		public override void DrawInner()
 		{
 			var bg = GetBackground();