Fix a memory leak in lpr, alternate checks...

[gad]

Summary

This is meant as a follow-up to "D9954: Fix a memory leak in lpr"

... but I suspect that I'm not doing this right!

[gad]

Hmm. Odd that it didn't build. It did compile on my system, although I didn't do much more than compile it.

[pfg]

Phabricator has been hitting false build positives, don't worry.
I'll stand down as reviewer... I have too much to do on other fronts :(.

[ngie]

In D9982#206141, @pfg wrote:

Phabricator has been hitting false build positives, don't worry.
I'll stand down as reviewer... I have too much to do on other fronts :(.

The issue is that ^/head isn't healthy. rS315112 introduced a geom panic that's triggered by the geli tests.