metar_start_open():

gnome-shell: vfprintf %s NULL in "metar_start_open, requesting: https://www.aviationweather.gov/adds/dataserver_current/httpparam?dataSource=metars&requestType=retrieve&format=xml&hoursBeforeNow=3&mostRecent=true&fields=raw_text&stationString=%s"

metar_finish(), called from metar_start_open():

gnome-shell: vfprintf %s NULL in "METAR data for %s"
gnome-shell: vfprintf %s NULL in "<raw_text>%s "

Index: libgweather/weather-metar.c
--- libgweather/weather-metar.c.orig
+++ libgweather/weather-metar.c
@@ -675,6 +675,9 @@ metar_start_open (GWeatherInfo *info)
     if (!loc->latlon_valid)
         return;
 
+    if (!loc->code)
+        return;
+
     g_debug ("metar_start_open, requesting: https://www.aviationweather.gov/adds/dataserver_current/httpparam?dataSource=metars&requestType=retrieve&format=xml&hoursBeforeNow=3&mostRecent=true&fields=raw_text&stationString=%s", loc->code);
     query = soup_form_encode (
         "dataSource",