message: Fix the memory leak.
diff: @@ -1795,6 +1795,11 @@ static int swoole_mysql_coro_onRead(swReactor *reactor, swEvent *event)
  zend_update_property_long(swoole_mysql_coro_class_entry_ptr, zobject, ZEND_STRL("connect_errno"), 111 TSRMLS_CC);
  swoole_mysql_coro_close(zobject);
  + if (!client->cid)
  + {
  + return SW_OK;
  + }
  +
  SW_ALLOC_INIT_ZVAL(result);
  ZVAL_BOOL(result, 0);
  if (client->defer && !client->suspending)
  @@ -1804,10 +1809,7 @@ static int swoole_mysql_coro_onRead(swReactor *reactor, swEvent *event)
  return SW_OK;
  }
  client->suspending = 0;
  - if (!client->cid)
  - {
  - return SW_OK;
  - }
  +
  php_context *sw_current_context = swoole_get_property(zobject, 0);
  ret = coro_resume(sw_current_context, result, &retval);
  sw_zval_free(result);
  