[Svn] [roundcube/roundcubemail] 8df6d7: Fix regression in compressMessageSet() (#6235)

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/roundcube/roundcubemail
  Commit: 8df6d7c3e4db30451f0360c29acb0da3bf0cb70f
      https://github.com/roundcube/roundcubemail/commit/8df6d7c3e4db30451f0360c29acb0da3bf0cb70f
  Author: Aleksander Machniak <alec at alec.pl>
  Date:   2018-04-06 (Fri, 06 Apr 2018)

  Changed paths:
    M program/lib/Roundcube/rcube_imap_generic.php

  Log Message:
  -----------
  Fix regression in compressMessageSet() (#6235)