On PSP, return 200 OK when a user tries to do an invalid favourite ac…

…tion

If we return Unauthorized, the client spams the server until it gets a 200 OK, which it never will, leading to an infinite loading loop.

Refresh.GameServer/Endpoints/Game/RelationEndpoints.cs

@@ -48,7 +48,7 @@ public Response FavouriteUser(RequestContext context, GameDatabaseContext databa
         if (database.FavouriteUser(userToFavourite, user))
             return OK;
 
-        return Unauthorized;
+        return context.IsPSP() ? OK : Unauthorized;
     }
 
     [GameEndpoint("unfavourite/user/{username}", Method.Post)]