Configure: fixed PCRE requirement check by ngx_http_rewrite_module.
Configure: fixed PCRE requirement check by ngx_http_rewrite_module.

The http_rewrite module cannot be selected when http is disabled.
Fixed the PCRE check condition to avoid irrelevant check failure.
This is a regression from 4d874b4d82ed.

Signed-off-by: Samuel Martin <fa84b044cd972a3040f6596903a3209d1974a1c1@gmail.com>

hy0kl/nginx,hy0kl/nginx,hy0kl/nginx