BUG/MINOR: ssl: openssl-compat: Fix getm_ defines

LIBRESSL_VERSION_NUMBER evaluates to 0 under OpenSSL, making the condition
always true. Check for the define before checking it.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

[wt: to be backported as far as 1.9]
1 file changed