QSGBatchRender: avoid crash if buffer shrinks

The QRhiBuffer does not shrink; thus we can end up with
buffer->buf->size > buffer->size. This would subsequently lead to an
out-of-bounds memory access, and a crash. Fix this by using the
uploadStaticBuffer overload which takes the size.
As a drive-by, remove pointless QByteArray::fromRawData call.

Change-Id: I40058ada6a6a5eb745ae559e8c9ed474fd41f75c
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>
(cherry picked from commit f0a51eef5696782ec325b20f14cfe353d0a58d20)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>

0 files changed, 0 insertions, 0 deletions