because the user has modified the document

Change-Id: Ib32ea2ff41f41a81c9a382585f6afbec12fe6a35
Reviewed-on: https://gerrit.libreoffice.org/38284Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Samuel Mehrbrodt <Samuel.Mehrbrodt@cib.de>