message: Add initial datagram servant to broker
diff: @@ -217,6 +217,8 @@ void abstract_broker::add_datagram_servant(datagram_servant_ptr ptr) {
  launch_servant(ptr);
  for (auto& hdl : hdls)
  add_hdl_for_datagram_servant(ptr, hdl);
  + auto hdl = ptr->hdl();
  + add_hdl_for_datagram_servant(std::move(ptr), hdl);
  }
  void abstract_broker::add_hdl_for_datagram_servant(datagram_servant_ptr ptr,
  