[tzsetup] can't set up local timezone if CMOS is set to UTC

[Boris Samorodov]

Hi Marius, All,

Subj at today's amd64-HEAD. If I use command "sudo tzsetup" and
choose YES (CMOS clock is set to UTC), the program just quits.
Yea, my clocks are at UTC but I want to get time at local timezone. :-)

I've found a recent commit to tzsetup, is it the cause?

-- 
WBR, Boris Samorodov (bsam)
FreeBSD Committer, http://www.FreeBSD.org The Power To Serve