A little help with cbdata and requestLink

Would someone mind taking a quick look at this patch:
   http://www.squid-cache.org/bugs/attachment.cgi?id=1989

and telling me if I've royally stuffed up with managing fwdState and
request linking?

It's to make miss_access a slow lookup...

Thanks,

--
Mark Nottingham       mnot_at_yahoo-inc.com