With this patch it will work not just for pptx, but other ooxml presentation
file formats.
Follow up of commit: 071a36e042
(tdf#150176 pptx chart import: fix automatic border style)
Change-Id: I05e03d2723e9978156dfd8025e3a4b5bcecddbc0
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/138059
Tested-by: Jenkins
Reviewed-by: Balazs Varga <balazs.varga.extern@allotropia.de>