llhttp 9.0.0 no longer accepts bare LF

[guoye-zhang]

The following response is rejected by the parser even with all lenient flags enabled:

"HTTP/1.1 200 OK\nContent-Length: 0\n\n"

[ShogunPanda]

I think this is an unwanted regression. I'll take a look soon.

[Dreamsorcerer]

Which option will need to be enabled after the PR lands to enable this (had a couple of users report similar issues)?
llhttp_set_lenient_optional_lf_after_cr()?

[ShogunPanda]

You'll have to use llhttp_set_lenient_headers. The bug was not on the new flags but on old ones :)