fix extension save error when category change (#886)

Co-authored-by: noO0ob <[email protected]>

lyrebird/checker/__init__.py

@@ -264,7 +264,9 @@ def _load_checker(self):
 
         self.update = True
         self._checker_detection()
+
         global scripts_tmp_storage
+        self._funcs_map.clear()
         for func_type, func_list in scripts_tmp_storage.items():
             self._funcs_map[func_type] = [f for f in func_list]
         scripts_tmp_storage = {}