As I read the history...
3.0.9 does not have the SSL_CTRL_GET_IANA_GROUPS change.
ssl3_ctx_ctrl does not seem to have ever had an entry for
SSL_CTRL_GET_IANA_GROUPS; that is only in ssl3_ctrl.
The form that has "s-> ext.peer_supportedgroups" is from
ssl3_ctrl before about a year ago; a year ago it was changed from
"s" to "sc".
Net, this seems to be a snippet from the main line in Spring 2022
transplanted into a different function.
