st/readpixels: fix accel path for skipimages.
We don't need to use the 3d image address here as that will
include SKIP_IMAGES, and we are only blitting a single
2D anyways, so just use the 2D path.
This fixes some memory overruns under CTS
packed_pixels.packed_pixels_pixelstore when PACK_SKIP_IMAGES
is used.
Cc: "11.0" <mesa-stable@lists.freedesktop.org>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
(cherry picked from commit
6a3e1fb958778e00e8fe2d860b6327fc4409c148)