[dovecot/core] 958e5a: director: Fix shutdown_clients=no to not break

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/dovecot/core
  Commit: 958e5ae51a755558b6d022a39b194614726b4225
      https://github.com/dovecot/core/commit/958e5ae51a755558b6d022a39b194614726b4225
  Author: Timo Sirainen <timo.sirainen at dovecot.fi>
  Date:   2016-10-21 (Fri, 21 Oct 2016)

  Changed paths:
    M src/director/main.c

  Log Message:
  -----------
  director: Fix shutdown_clients=no to not break

The director process must shut down even with with shutdown_clients=no.
Otherwise the two director processes will try to keep competing with each
others and log errors like:

director: Warning: Director 10.0.0.123:9090/right disconnected us with reason: Replacing with new incoming connection
director: Warning: Director 10.0.0.123:9090/right disconnected us with reason: Replacing with 10.0.0.124:9090