Fix FTBFS with TDE support enabled

Change-Id: Ib85371542c5d79ef69bc76f6aa388acdfd9dd849
Reviewed-on: https://gerrit.libreoffice.org/10348
Reviewed-by: Timothy Pearson <kb9vqf@pearsoncomputing.net>
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>