st/mesa: don't affect original st_CompressedTexSubImage parameters

The fallback path is still possible here so let keep them as is.

Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/3952
Fixes: 4b02f165 ("st/mesa: implement PBO upload for glCompressedTex(Sub)Image")
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Signed-off-by: Andrii Simiklit <andrii.simiklit@globallogic.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8258>
(cherry picked from commit 5ae7d40648ca643615fd551a3c6fcecb8301fc91)
2 files changed