Combine way action refuses to combine new way with oneway

[GerdP]

What steps will reproduce the problem?

1. Load attached sample
2. Select new way
3. Select oneway
4. Press C (Combine ways)

What is the expected result?

Popup that asks if ways should be reversed

What happens instead?

popup "Could not combine ways"

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

If you select the two ways in the opposed order it works fine.
Regression of r15554 (method isConnected() returns false which is wrong).

Build-Date:2019-12-04 10:43:48
Revision:15557
Is-Local-Build:true

Identification: JOSM/1.5 (15557 SVN en) Windows 10 64-Bit
OS Build number: Windows 10 Home 1903 (18362)
Memory Usage: 845 MB / 1753 MB (425 MB allocated, but free)
Java version: 1.8.0_191-b12, Oracle Corporation, Java HotSpot(TM) 64-Bit Server VM
Screen: \Display0 1920x1080
Maximum Screen Size: 1920x1080
VM arguments: [-agentlib:jdwp=transport=dt_socket,suspend=y,address=localhost:59404, -ea, -Dfile.encoding=UTF-8]
Program arguments: [--debug]
Dataset consistency test: No problems found

Plugins:
+ OpeningHoursEditor (35242)
+ apache-commons (35092)
+ buildings_tools (35171)
+ continuosDownload (82)
+ ejml (35122)
+ geotools (35169)
+ jaxb (35014)
+ jts (35122)
+ merge-overlap (35072)
+ o5m (34908)
+ opendata (35179)
+ pbf (35033)
+ poly (34991)
+ reverter (35226)
+ undelete (34977)
+ utilsplugin2 (35238)

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

[GerdP]

In 15558/josm:

fix #18387 Combine way action refuses to combine new way with oneway (regression from r15554)
I somehow expected that NodeGraph.getOutboundPairs(Node node) would return predessors and successors.
Maybe that routine should be renamed to getSuccessorPairs?