libcrypto: Add symbol versions for symbols added since 1.1.1d.

While here, trim a spurious local: I missed when added SSL_sendfile.

PR: 255277
Reported by: yuri
Reviewed by: jkim
Differential Revision: https://reviews.freebsd.org/D30483

(cherry picked from commit 7ad70d22c667173586c04fc13dd315995d78fbbf)