[dovecot/core] 18535e: configure: Fix building without OpenSSL

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/dovecot/core
  Commit: 18535eaa6c3bfd8bb5f5612baee01ddfb5645625
      https://github.com/dovecot/core/commit/18535eaa6c3bfd8bb5f5612baee01ddfb5645625
  Author: Timo Sirainen <timo.sirainen at dovecot.fi>
  Date:   2016-12-04 (Sun, 04 Dec 2016)

  Changed paths:
    M m4/ssl.m4

  Log Message:
  -----------
  configure: Fix building without OpenSSL

AM_CONDITIONAL() needs to be part of the code path that is always run,
or it fails with:

configure: error: conditional "SSL_VERSION_GE_102" was never defined.