[dovecot/core] 373126: dsync: Fixed potential crash

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/dovecot/core
  Commit: 37312679c89109e8762c3ec33da3dfac4c4177b8
      https://github.com/dovecot/core/commit/37312679c89109e8762c3ec33da3dfac4c4177b8
  Author: Timo Sirainen <timo.sirainen at dovecot.fi>
  Date:   2016-05-11 (Wed, 11 May 2016)

  Changed paths:
    M src/doveadm/dsync/dsync-mailbox-import.c

  Log Message:
  -----------
  dsync: Fixed potential crash

This seems to be possible with dsync_mailbox_find_common_expunged_uid() ->
dsync_mailbox_common_uid_found() -> dsync_mailbox_rewind_search() -> following
search doesn't find anything.