Mount the mod filesystem context in the ModData ctor.

OpenRA.Game/Game.cs

@@ -362,7 +362,6 @@ namespace OpenRA
 				return;
 			}
 
-			ModData.MountFiles();
 			ModData.InitializeLoaders();
 			Renderer.InitializeFonts(ModData.Manifest);
 

OpenRA.Game/ModData.cs

@@ -56,6 +56,8 @@ namespace OpenRA
 				LoadScreen.Display();
 			}
 
+			ModFiles.LoadFromManifest(Manifest);
+
 			WidgetLoader = new WidgetLoader(this);
 			RulesetCache = new RulesetCache(this);
 			RulesetCache.LoadingProgress += HandleLoadingProgress;
@@ -86,11 +88,6 @@ namespace OpenRA
 				LoadScreen.Display();
 		}
 
-		public void MountFiles()
-		{
-			ModFiles.LoadFromManifest(Manifest);
-		}
-
 		public void InitializeLoaders()
 		{
 			// all this manipulation of static crap here is nasty and breaks