Comment 2 for bug 1196499

StacktraceTop:
 g_str_hash (v=0x0) at /build/buildd/glib2.0-2.37.3/./glib/ghash.c:1732
 g_hash_table_lookup_node (hash_return=<synthetic pointer>, key=0x0, hash_table=0x99fd650) at /build/buildd/glib2.0-2.37.3/./glib/ghash.c:365
 g_hash_table_lookup (hash_table=0x99fd650, key=key@entry=0x0) at /build/buildd/glib2.0-2.37.3/./glib/ghash.c:1076
 gweather_location_find_by_station_code (world=0x99f5e98, station_code=station_code@entry=0x0) at /build/buildd/libgweather-3.8.2/./libgweather/gweather-location.c:830
 clock_location_new (world=0x99f5e98, name=name@entry=0x0, metar_code=metar_code@entry=0x0, override_latlon=override_latlon@entry=1, latitude=39.466667175292969, longitude=-0.3666670024394989) at clock-location.c:80