K 10
svn:author
V 5
pstef
K 8
svn:date
V 27
2020-06-20T06:20:00.631230Z
K 7
svn:log
V 611
Make vipw error message less cryptic

Unable to find an editor, vipw would give this error:
# env EDITOR=fnord vipw
vipw: pw_edit(): No such file or directory

vigr or crontab do better:
# env EDITOR=fnord crontab -e
crontab: no crontab for root - using an empty one
crontab: fnord: No such file or directory
crontab: "fnord" exited with status 1

After this change, vipw behaves more like vigr or crontab:
# env EDITOR=fnord vipw
vipw: fnord: No such file or directory
vipw: "fnord" exited with status 1

Reviewed by:	rpokala, emaste
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D25369

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