The libvirt package has this entry with a numeric user but
an explicit named group reference:
`u qemu 107:qemu "qemu user" - -`
Fix the parser to handle this.
Signed-off-by: Colin Walters <walters@verbum.org>
On general principle; this fixes a test failure in the lint unit
tests which don't create /etc/passwd.
But also, someone might reasonably create an image this way.
Signed-off-by: Colin Walters <walters@verbum.org>
