Fix: No submarine in hard campaign if team not prepared

Author: LmeSzinc

module/map/map_fleet_preparation.py

@@ -354,6 +354,8 @@ def fleet_preparation(self):
                     pass
                 else:
                     submarine.clear()
+            else:
+                self.config.SUBMARINE = 0
             return False
 
         # Submarine.