complain about bus stop position without nearby highway=bus_stop

[mkoniecz]

node with bus=yes and public_transport=stop_position should have nearby highway=bus_stop object.

Example of edit fixing this type of problem: ​https://www.openstreetmap.org/changeset/66160382

What steps will reproduce the problem?

1. load area from ​https://www.openstreetmap.org/changeset/66160382
2. delete highway=bus_stop nodes
3. run validator

What is the expected result?

Validator complains about missing highway=bus_stop

What happens instead?

Validator does not complain about missing highway=bus_stop

Please provide any additional information below. Attach a screenshot if possible.

URL:https://josm.openstreetmap.de/svn/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2018-12-31 15:09:58 +0100 (Mon, 31 Dec 2018)
Build-Date:2018-12-31 14:24:10
Revision:14620
Relative:URL: ^/trunk

Identification: JOSM/1.5 (14620 en) Linux Ubuntu 16.04.5 LTS
Memory Usage: 369 MB / 869 MB (188 MB allocated, but free)
Java version: 1.8.0_191-b12, Oracle Corporation, Java HotSpot(TM) 64-Bit Server VM
Screen: :0.0 1920x1080
Maximum Screen Size: 1920x1080
Dataset consistency test: No problems found

Plugins:
+ OpeningHoursEditor (34535)
+ buildings_tools (34724)
+ continuosDownload (82)
+ imagery_offset_db (34641)
+ measurement (34529)
+ reverter (34552)
+ todo (30306)

Last errors/warnings:
- W: No configuration settings found.  Using hardcoded default values for all pools.