Merge pull request #2511 from abarrau/dev

add test egual 0, for update distance

application/models/Logbook_model.php

@@ -3953,7 +3953,7 @@ function check_if_callsign_worked_in_logbook($callsign, $StationLocationsArray =
     public function update_distances(){
         $this->db->select("COL_PRIMARY_KEY, COL_GRIDSQUARE, station_gridsquare");
         $this->db->join('station_profile', 'station_profile.station_id = '.$this->config->item('table_name').'.station_id');
-        $this->db->where("COL_DISTANCE is NULL");
+        $this->db->where("((COL_DISTANCE is NULL) or (COL_DISTANCE = 0))");
         $this->db->where("COL_GRIDSQUARE is NOT NULL");
         $this->db->where("COL_GRIDSQUARE != ''");
         $this->db->trans_start();