message: revert ref_count operate
diff: @@ -1037,8 +1037,6 @@ static PHP_METHOD(swoole_redis_coro, connect)
  RETURN_FALSE;
  }
  - sw_zval_add_ref(&redis->object);
  -
  swConnection *conn = swReactor_get(SwooleG.main_reactor, redis->context->c.fd);
  conn->object = redis;
  php_context *sw_current_context = swoole_get_property(getThis(), 0);
  @@ -3708,7 +3706,6 @@ static void swoole_redis_coro_onClose(const redisAsyncContext *c, int status)
  swRedisClient *redis = c->ev.data;
  redis->state = SWOOLE_REDIS_CORO_STATE_CLOSED;
  redis->context = NULL;
  - sw_zval_ptr_dtor(&redis->object);
  }
  static void swoole_redis_coro_event_AddRead(void *privdata)
  