Handle error in GetGeoLocationByName

Return error when fetching GeoLocations fails or the result is empty. This ensures that an error is properly returned and handled when either an error occurs during the API call or no locations are found for the given city name.

geolocation.go

@@ -43,7 +43,7 @@ type GeoLocation struct {
 // This method makes use of the OSM Nominatim API
 func (c *Client) GetGeoLocationByName(ci string) (GeoLocation, error) {
 	ga, err := c.GetGeoLocationsByName(ci)
-	if len(ga) < 1 {
+	if err != nil || len(ga) < 1 {
 		return GeoLocation{}, err
 	}
 	return ga[0], nil