fix PrisonSystem

Author: Shegare

Content.Server/_Stories/Prison/PrisonSystem.cs

@@ -135,7 +135,7 @@ private void OnStationInit(EntityUid uid, StationPrisonComponent component, MapI
         var prototype = _prototypeManager.Index(component.GameMap);
 
         _map.CreateMap(out var mapId, false);
-        _gameTicker.LoadGameMap(prototype, mapId, null);
+        _gameTicker.LoadGameMap(prototype, out mapId, null);
 
         var prison = _station.GetStationInMap(mapId);