Misc remaining FileSystem cleanups.

OpenRA.Mods.Common/UtilityCommands/ImportLegacyMapCommand.cs

@@ -29,6 +29,7 @@ namespace OpenRA.Mods.Common.UtilityCommands
 			MapSize = mapSize;
 		}
 
+		public ModData ModData;
 		public Map Map;
 		public Ruleset Rules;
 		public List<string> Players = new List<string>();
@@ -42,9 +43,10 @@ namespace OpenRA.Mods.Common.UtilityCommands
 		[Desc("FILENAME", "Convert a legacy INI/MPR map to the OpenRA format.")]
 		public virtual void Run(ModData modData, string[] args)
 		{
+			ModData = modData;
+
 			// HACK: The engine code assumes that Game.modData is set.
 			Game.ModData = modData;
-
 			Rules = modData.RulesetCache.Load(modData.DefaultFileSystem);
 
 			var filename = args[1];