K 10
svn:author
V 6
emaste
K 8
svn:date
V 27
2017-09-05T12:57:45.090716Z
K 7
svn:log
V 338
make-memstick.sh: use 'set -e' to abort if any step fails

Also remove the now-redundant error handling that was only for makefs.

This change applies arm64's r308171 to the other make-memstick.sh
versions.

Reviewed by:	gjb
MFC after:	1 week
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D12195

END