www/elinks: Fix ssl initialization on newer openssl/libressl without EGD

PR: 234808
Submitted by: Derek Schrock <dereks@lifeofadishwasher.com>
Approved by: beat (maintainer timeout)
Obtained from: https://repo.or.cz/elinks.git/blobdiff/6eba447e8ae12cacac3b479c7148d189bea3e8ea..f4a58ba3b574a478fd5954ba2c5b29e8b809ff9b:/src/network/ssl/ssl.c
MFH: 2019Q1