Add flag to allow skipping calling node function for nodes with no tags.

include/extractor/profile_properties.hpp

@@ -22,7 +22,7 @@ struct ProfileProperties
         : traffic_signal_penalty(0), u_turn_penalty(0),
           max_speed_for_map_matching(DEFAULT_MAX_SPEED), continue_straight_at_waypoint(true),
           use_turn_restrictions(false), left_hand_driving(false), fallback_to_duration(true),
-          weight_name{"duration"}
+          weight_name{"duration"}, call_tagless_node_function(true)
     {
         BOOST_ASSERT(weight_name[MAX_WEIGHT_NAME_LENGTH] == '\0');
     }
@@ -88,6 +88,8 @@ struct ProfileProperties
     char weight_name[MAX_WEIGHT_NAME_LENGTH + 1];
     unsigned weight_precision = 1;
     bool force_split_edges = false;
+
+    bool call_tagless_node_function = true;
 };
 }
 }