[dovecot/core] 123d1c: lib-ssl-iostream: Use ENGINE_set_default()

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/dovecot/core
  Commit: 123d1cb83e666b485df755467df64edc456d56db
      https://github.com/dovecot/core/commit/123d1cb83e666b485df755467df64edc456d56db
  Author: Timo Sirainen <timo.sirainen at dovecot.fi>
  Date:   2016-06-23 (Thu, 23 Jun 2016)

  Changed paths:
    M src/lib-ssl-iostream/dovecot-openssl-common.c

  Log Message:
  -----------
  lib-ssl-iostream: Use ENGINE_set_default()