the only place that passes it to a window class, does so to a window
class that does not implement that style.

Change-Id: I74d705ed928b797c3456cf23a8074c62d0c12247
Reviewed-on: https://gerrit.libreoffice.org/43072Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>