don't bother drawing zero-width cells

If a document has most columns hidden, then they'd be "drawn"
anyway, since ScGridWindow::Draw() calls ExtendHidden(), this appears
to be needed in order to drawn properly background after the last
cell. So at least try avoid zero-sized draw operations which
may add up enough to be noticeable with 16k columns

Change-Id: I631e3be7467f8ea2dbfb824e647f900a7573da61
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/131326
Tested-by: Jenkins
Reviewed-by: Luboš Luňák <l.lunak@collabora.com>

0 files changed, 0 insertions, 0 deletions