fix register bug

tournaments/models/tournament.py

@@ -2078,10 +2078,10 @@ class Tournament(BaseModel):
 
     def is_cart_player_from_club(self, player_data):
         player_club_code = player_data.get('club_code', None)
-        if player_club_code is None and len(player_club_code) > 0:
+        if player_club_code is None or len(player_club_code) == 0:
             return False
         club_code = self.event.club.code
-        if club_code is not None and len(club_code) > 0:
+        if club_code is None or len(club_code) == 0:
             return False
         player_club_code = player_club_code.replace(" ", "")
         club_code = club_code.replace(" ", "")