K 10
svn:author
V 6
kevans
K 8
svn:date
V 27
2020-12-06T15:58:50.943250Z
K 7
svn:log
V 360
bectl: simplify the tail end of the jail cmd

This has already confused me once (and I'm pretty sure I wrote it), so let's
clarify: unjailing after the command has completed will only happen if we're
interactive and -U has not been specified.

This just folds two conditionals together to make it obvious how -b/-U
interact with each other.

MFC after:	3 days

END