fix bug

TrackingRos.cpp

@@ -375,7 +375,7 @@ void TrackingRos::Init(ros::NodeHandle& nh)
         tracking_box_topic = config["tracking_box_topic_name"].as<std::string>();
     if(config["tracking_marker_topic_name"])
         tracking_marker_topic = config["tracking_marker_topic_name"].as<std::string>();         
-    f(config["tracking_marker_arrow_name"])
+    if(config["tracking_marker_arrow_name"])
         tracking_marker_arrow = config["tracking_marker_arrow_name"].as<std::string>();    
     m_subFusionRes = nh.subscribe<jfx_common_msgs::det_tracking_array>(fusion_topic.c_str(), 1000, &TrackingRos::TrackingCallBackFunc, this);
     m_pub = nh.advertise<jfx_common_msgs::det_tracking_array>(tracking_topic.c_str(), 100);