bin/63160: chown failed to chown valid files/dirs to valid username

[Lukas Ertl]

Synopsis: chown failed to chown valid files/dirs to valid username

Responsible-Changed-From-To: freebsd-bugs->le
Responsible-Changed-By: le
Responsible-Changed-When: Wed Mar 10 04:06:57 PST 2004
Responsible-Changed-Why: 
I can't reproduce this behaviour on 5.2-CURRENT, but I'll take this PR.

http://www.freebsd.org/cgi/query-pr.cgi?pr=63160