message: fix swoole_redis->errCode invalid
diff: @@ -810,7 +810,7 @@ void swoole_redis_onConnect(const redisAsyncContext *c, int status)
  if (status != REDIS_OK)
  {
  - zend_update_property_long(swoole_redis_class_entry_ptr, redis->object, ZEND_STRL("errCode"), c->err TSRMLS_CC);
  + zend_update_property_long(swoole_redis_class_entry_ptr, redis->object, ZEND_STRL("errCode"), errno TSRMLS_CC);
  zend_update_property_string(swoole_redis_class_entry_ptr, redis->object, ZEND_STRL("errMsg"), c->errstr TSRMLS_CC);
  redis->state = SWOOLE_REDIS_STATE_CLOSED;
  redis_execute_connect_callback(redis, 0 TSRMLS_CC);
  