KolabMailSynchronizer: folder hash table from InfoDb may be NULL
KolabMailSynchronizer: folder hash table from InfoDb may be NULL

* InfoDb may be missing folder information (e.g. if an
  account with no IMAP folders is used)
* we need to set an error in this case (and not use the
  NULL hash table)

GNOME/evolution-kolab,GNOME/evolution-kolab