- if (ngx_list_init(&r->headers_in.headers, r->pool, sc->entries + 3, + if (ngx_list_init(&r->headers_in.headers, r->pool, 20, Personally, both

- if (ngx_list_init(&r->headers_in.headers, r->pool, sc->entries + 3, + if (ngx_list_init(&r->headers_in.headers, r->pool, 20, Personally, both the old code and the new code use magic numbers, and both send up a red flag to me. What does 20 mean? (I don't personally need an answer here: my point is it's not obvious and therefore it's easier for bugs to get through.)