[InterNetNews/inn] 462852: nnrpd: Fix the detection of the OpenSSL version

[Julien ÉLIE]

  Branch: refs/heads/main
  Home:   https://github.com/InterNetNews/inn
  Commit: 462852b15167a9eeed59c63834c5f4e1b37008ac
      https://github.com/InterNetNews/inn/commit/462852b15167a9eeed59c63834c5f4e1b37008ac
  Author: Julien ÉLIE <Julien-Elie at users.noreply.github.com>
  Date:   2022-05-24 (Tue, 24 May 2022)

  Changed paths:
    M nnrpd/tls.c

  Log Message:
  -----------
  nnrpd: Fix the detection of the OpenSSL version

Adding support for LibreSSL broke the detection of the OpenSSL version to use.
Checking whether LIBRESSL_VERSION_NUMBER was defined was missing.