move WithDefault onto Exts

OpenRA.Utility/Program.cs

@@ -34,7 +34,7 @@ namespace OpenRA.Utility
 
 			try
 			{
-				var action = WithDefault( null, () => actions[args[0]]);
+				var action = Exts.WithDefault( null, () => actions[args[0]]);
 				if (action == null)
 					PrintUsage();
 				else
@@ -61,12 +61,6 @@ namespace OpenRA.Utility
 			Console.WriteLine("  --extract MOD[,MOD]* FILES	      Extract files from mod packages");
 		}
 
-		static T WithDefault<T>(T def, Func<T> f)
-		{
-			try { return f(); }
-			catch { return def; }
-		}
-
         static string GetNamedArg(string[] args, string arg)
         {
             if (args.Length < 2)