message: fix redis_coro leak memory with defer.
diff: @@ -4171,6 +4171,7 @@ static void swoole_redis_coro_onResult(redisAsyncContext *c, void *r, void *priv
  {
  redis->iowait = SW_REDIS_CORO_STATUS_DONE;
  redis->defer_result = sw_zval_dup(result->value);
  + efree(result);
  return;
  }
  else
  