fixup client.check_version connect loop

Author: dpkp

kafka/client_async.py

@@ -990,7 +990,7 @@ def check_version(self, node_id=None, timeout=None, **kwargs):
                         continue
                 conn = self._conns[try_node]
 
-                while not conn.disconnected() and conn._api_version is None and time.time() < end:
+                while conn.connecting() and time.time() < end:
                     timeout_ms = min((end - time.time()) * 1000, 200)
                     self.poll(timeout_ms=timeout_ms)