That's what it actually means. Also make it a boolean

Change-Id: I249e18351253b34b5dada28e2a9c6bc0c06b730c
Reviewed-on: https://gerrit.libreoffice.org/18688Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Samuel Mehrbrodt <Samuel.Mehrbrodt@cib.de>