Update handling of multiple headers changed in nginx 1.23.0

[hnakamur]

I hereby granted the copyright of the changes in this pull request
to the authors of this lua-nginx-module project.

This fixes nginx 1.23.0 and ngx_http_lua_headers_in.c cookies -> cookie · Issue #2062 · openresty/lua-nginx-module

[hnakamur]

Travis failed with the following ngx-releng output:

$ ngx-releng > check.txt || true
+wiki2markdown.pl doc/HttpLuaModule.wiki
The command "ngx-releng > check.txt || true" exited with 0.
$ lines=`wc -l check.txt | awk '{print $1}'`; if [ $lines -gt 5 ]; then cat check.txt; exit 1; fi
Generating README.markdown
ngx_lua 0.10.19
Checking sources in /home/travis/build/openresty/lua-nginx-module/src
src/api/ngx_http_lua_api.h:22:#define ngx_http_lua_version  10021
src/ngx_http_lua_headers_out.c:353: create:
Checking tests in /home/travis/build/openresty/lua-nginx-module/t

What can I do to resolve this error?

[hnakamur]

Thanks!

[muuvmuuv]

Any ETA for a tag release?