[dovecot/pigeonhole] a43487: doveadm-sieve: Update attribute API usage

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/dovecot/pigeonhole
  Commit: a43487489053f28a7aed09729b51b90d81902310
      https://github.com/dovecot/pigeonhole/commit/a43487489053f28a7aed09729b51b90d81902310
  Author: Josef 'Jeff' Sipek <jeff.sipek at dovecot.fi>
  Date:   2016-09-20 (Tue, 20 Sep 2016)

  Changed paths:
    M src/plugins/doveadm-sieve/doveadm-sieve-sync.c

  Log Message:
  -----------
  doveadm-sieve: Update attribute API usage