JOSM leaves behind josm_exec_ temp files

[simon04]

Related to lsb_release not existing on my system.

2020-03-07 09:40:09.611 FINE: lsb_release -i -s
2020-03-07 09:40:09.712 FINE: java.io.IOException: Cannot run program "lsb_release": error=2, No such file or directory. Cause: java.io.IOException: error=2, No such file or directory
2020-03-07 09:40:10.301 FINE: java.io.IOException: Cannot run program "lsb_release": error=2, No such file or directory. Cause: java.io.IOException: error=2, No such file or directory

Build-Date:2020-03-05 20:26:35
Revision:16038
Is-Local-Build:true

Identification: JOSM/1.5 (16038 SVN en_GB) Linux Arch Linux
Memory Usage: 529 MB / 3531 MB (396 MB allocated, but free)
Java version: 1.8.0_242-b08, Oracle Corporation, OpenJDK 64-Bit Server VM
Screen: :0.0 3840x2160
Maximum Screen Size: 3840x2160
VM arguments: [-Djosm.home=<josm.pref>, -agentpath:/opt/yourkit/bin/linux-x86-64/libyjpagent.so=sampling,_ide_project_name=JOSM,sessionname=YJPQUOTED4a4f534d20746d70,profiler_dir=/opt/yourkit,ideport=36883,onexit=snapshot, -javaagent:/home/simon/bin/idea/lib/idea_rt.jar=36249:${HOME}/bin/idea/bin, -Dfile.encoding=UTF-8]
Program arguments: [--set=expert=true, --set=iso.dates=true, --set=debug.edt-checker.enable=true, --debug]

[simon04]

In 16052/josm:

fix #18878 - JOSM leaves behind josm_exec_ temp files