Perl: fixed r->header_in("Cookie") (ticket #351).
Perl: fixed r->header_in("Cookie") (ticket #351).

It was broken by X-Forwarded-For related changes in f7fe817c92a2 (1.3.14)
as hh->offset is no longer 0 for Cookie.

hy0kl/nginx,firebase/nginx,hy0kl/nginx,firebase/nginx,firebase/nginx,firebase/nginx,hy0kl/nginx