message: OdometryROS: don't publish odom if velocity is null too when publish_null_when_lost is false
diff: @@ -527,8 +527,11 @@ void OdometryROS::processData(const SensorData & data, const ros::Time & stamp)
  odom.twist.covariance.at(35) = setTwist?info.reg.covariance.at<double>(5,5):BAD_COVARIANCE; // yawyaw
  //publish the message
  + if(setTwist || publishNullWhenLost_)
  + {
  odomPub_.publish(odom);
  }
  + }
  // local map / reference frame
  if(odomLocalMap_.getNumSubscribers() && !info.localMap.empty())
  