review fix

Author: deadlovelll

Lib/asyncio/base_events.py

@@ -590,7 +590,7 @@ async def shutdown_asyncgens(self):
             return_exceptions=True)
 
         for result, agen in zip(results, closing_agens):
-            if isinstance(result, (Exception, exceptions.CancelledError)):
+            if isinstance(result, BaseException):
                 self.call_exception_handler({
                     'message': f'an error occurred during closing of '
                                f'asynchronous generator {agen!r}',