fix issues with coordinates save JSONObject["address"] not found

[tillkuhn]

Describe the bug
-15.2646156,-145.1163131.
error 500

Additional context
Add any other context about the problem here.

023-02-01 20:17:49Z DEBUG n.t.angkor.service.PlaceService : AreaCode pf or GeoAddress null empty, lookup geoPoint for [-145.1163131, -15.2646156]
2023-02-01 20:17:49Z  INFO n.t.angkor.service.GeoService   : Downloading geo info for Coordinates(lon=-145.1163131, lat=-15.2646156) from https://nominatim.openstreetmap.org status=200
2023-02-01 20:17:49Z  INFO n.t.angkor.service.GeoService   : Json: {"error":"Unable to geocode"}
2023-02-01 20:17:49Z ERROR .c.c.C.[.[.[.[dispatcherServlet]: Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed: org.json.JSONException: JSONObject["address"] not found.] with root cause

org.json.JSONException: JSONObject["address"] not found.
	at org.json.JSONObject.get(JSONObject.java:471) ~[json-20160212.jar!/:na]
	at org.json.JSONObject.getJSONObject(JSONObject.java:636) ~[json-20160212.jar!/:na]
	at net.timafe.angkor.service.GeoService.mapToOSMPlaceSummary(GeoService.kt:101) ~[classes!/:na]
	at net.timafe.angkor.service.GeoService.reverseLookup(GeoService.kt:94) ~[classes!/:na]
	at net.timafe.angkor.service.GeoService.reverseLookupWithRateLimit(GeoService.kt:60) ~[classes!/:na]
	at net.timafe.angkor.service.AbstractLocationService.save(AbstractLocationService.kt:24) ~[classes!/:na]
	at net.timafe.angkor.service.PlaceService.save(PlaceService.kt:40) ~[classes!/:na]