Fixed: some of $sent_http_* variables may contain header entries that actually haven't been sent to a client.
Fixed: some of $sent_http_* variables may contain header entries that actually
haven't been sent to a client.

The ngx_http_variable_headers() and ngx_http_variable_unknown_header() functions
did not ignore response header entries with zero "hash" field.

Thanks to Yichun Zhang (agentzh).

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