ipfw add pipe broken in RELENG_6

[Andrey V. Elsukov]

Julian Elischer пишет:
> somewhere between my MFC testing and the commits there seems to have 
> been a screwup.
> I think it happenned because I reverted a MFC out of my list of MFC's to 
> do after
> I had done some tests because they causled a failure and I hadn't 
> realised that
> they affected this code too.
> 
> I'm doing testing now and should be able to confirm this in a short while.

Hi, Julian!

Seems, that converting from time_second to time_uptime broke
`ipfw -t show'.
Now we have one PR:
http://www.freebsd.org/cgi/query-pr.cgi?pr=111177

And i see similar problem on the my CURRENT.

-- 
WBR, Andrey V. Elsukov