poi service not working for no additional osm tags

[TheGreatRefrigerator]

When pois without osm_tags are returned, console error because variable osmTags is undefined due to no check if osm_tags are actually there

[TheGreatRefrigerator]

Example vending machine
returns as :

{
	"7": {
		"type": "Feature",
		"geometry": {
			"type": "Point",
			"coordinates": [
				8.692216,
				49.40434
			]
		},
		"properties": {
			"osm_id": 8671377598,
			"osm_type": 1,
			"distance": 0,
			"category_ids": {
				"528": {
					"category_name": "vending_machine",
					"category_group": "shops"
				}
			}
		}
	}
}

as the only additional tag to amenity=vending_machine is vending=parking_tickets which does not get picked up