freebsd stable - Nov 2014 - ia64 10-stable buildworld failure: usr/src/usr.sbin/pw/pw_user.c:341: warning: signed and unsigned type in conditional expression

Asking on stable@ too.
>From mexas Thu Nov  6 13:46:08 2014
>To: freebsd-ia64 at freebsd.org
>Subject: ia64 10-stable buildworld failure:
usr/src/usr.sbin/pw/pw_user.c:341: warning: signed and unsigned type in
conditional expression
>Reply-To: mexas at bris.ac.uk
>
>I'm updating a 10-stable poudriere jail on ia64 from
>
># poudriere jail -l
>JAILNAME VERSION                 ARCH METHOD    TIMESTAMP           PATH
>ia64-10  10.1-PRERELEASE r273463 ia64 svn+https 2014-10-22 14:51:39
/pdr/jails/ia64-10
>#
>
>to some today's.
>
>BTW, I can't seem to be able to find
>what revision it's building. Any hints?
>
>I get to:
>
>cc1: warnings being treated as errors
>/pdr/jails/ia64-10/usr/src/usr.sbin/pw/pw_user.c: In function
'pw_user':
>/pdr/jails/ia64-10/usr/src/usr.sbin/pw/pw_user.c:341: warning: signed and
unsigned type in conditional expression
>/pdr/jails/ia64-10/usr/src/usr.sbin/pw/pw_user.c:808: warning: signed and
unsigned type in conditional expression
>*** [pw_user.o] Error code 1
>
>make[4]: stopped in /pdr/jails/ia64-10/usr/src/usr.sbin/pw
>
>Please advise
>
>Thanks
>
>Anton