This can be used by engines that need to retain the data for a longer time
than just the call where this user data is passed.
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3575)
It seems the =item isn't supposed to have pure numbers, or so tells me
perldoc.
Reviewed-by: Tim Hudson <tjh@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/2906)
