Corrected inability to build on systems using libressl instead of openssl (e. g. void linux) by adjusting the #defines in modules/openssl/stream_peer_openssl.cpp and modules/openssl/stream_peer_openssl.h to check if LIBRESSL_VERSION_NUMBER is defined (as done similarly in the following patch in freebsd: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=219362 ).