[openssl-project] thread-unsafety in SNI handling with SSL_SESSION

[Benjamin Kaduk]

Hi folks,

https://github.com/openssl/openssl/pull/4519 introduced some thread-unsafe
behavior, and we had some discussion on that (closed) PR back in May, which
led to the creation of https://github.com/openssl/openssl/pull/6378 .  The
latter one has languished for a while, partly because I was slow in making
some needed fixups.  But it may be worth revisiting now, if anyone has some
time to spare.

Thanks,

Bne