Fixed possible buffer overrun in "too long header line" logging.
Fixed possible buffer overrun in "too long header line" logging.

Additionally, ellipsis now always added to make it clear that
the header logged is incomplete.

Reported by Daniil Bondarev.

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