... to prevent further confusion what it acually returns.
Follow-up inspection of places where used might be necessary, and
whether an IsEmpty() is used and necessary or an IsAnyEmpty() or
some such would be needed.

Change-Id: I7975a97f0d16442cf195956d148bfb7fbdf89c6a
Reviewed-on: https://gerrit.libreoffice.org/51055Reviewed-by: Eike Rathke <erack@redhat.com>
Tested-by: Jenkins <ci@libreoffice.org>