changes to TypeDictionary's interface. (build-palette is broken, so hasn't been tested)

OpenRa.Game/Shroud.cs

@@ -35,7 +35,7 @@ namespace OpenRa.Game
 		{
 			foreach (var t in Game.FindTilesInCircle(
 				(1f / Game.CellSize * a.CenterLocation).ToInt2(), 
-				a.Info.Traits.WithInterface<OwnedActorInfo>().First().Sight))
+				a.Info.Traits.Get<OwnedActorInfo>().Sight))
 				explored[t.X, t.Y] = true;
 
 			dirty = true;