follow-up prev commit

Author: ecdsa

electrum/json_db.py

@@ -225,7 +225,7 @@ def __delitem__(self, key: _FLEX_KEY) -> None:
         r  = self.get(key, None)
         dict.__delitem__(self, key)
         self.db_remove(key)
-        if isinstance(r, StoredDict):
+        if isinstance(r, BaseStoredObject):
             r._parent = None
 
     @locked
@@ -238,7 +238,7 @@ def pop(self, key: _FLEX_KEY, v=_RaiseKeyError) -> Any:
                 return v
         r = dict.pop(self, key)
         self.db_remove(key)
-        if isinstance(r, StoredDict):
+        if isinstance(r, BaseStoredObject):
             r._parent = None
         return r