message: fix compile error c++
diff: @@ -451,7 +451,7 @@ static sw_inline zval* php_swoole_server_get_callback(swServer *serv, int server
  static sw_inline zend_fcall_info_cache* php_swoole_server_get_cache(swServer *serv, int server_fd, int event_type)
  {
  swListenPort *port = (swListenPort *) serv->connection_list[server_fd].object;
  - swoole_server_port_property *property = (swListenPort *) port->ptr;
  + swoole_server_port_property *property = (swoole_server_port_property *) port->ptr;
  if (!property)
  {
  return php_sw_server_caches[event_type];
  