[dovecot/core] a6366f: lib-ssl-iostream: Fix alt cert support

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/dovecot/core
  Commit: a6366f3b2ccb3fb2f871a42b23ff2833309d8794
      https://github.com/dovecot/core/commit/a6366f3b2ccb3fb2f871a42b23ff2833309d8794
  Author: Aki Tuomi <aki.tuomi at dovecot.fi>
  Date:   2017-11-03 (Fri, 03 Nov 2017)

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

  Log Message:
  -----------
  lib-ssl-iostream: Fix alt cert support

It was only partially implemented in 0577701d04beea222fc49a7318851ddcea3b99d3