this got mixed up during some refactor and started indexing based on the
number of bindings instead of the number of descriptors, which means
that array descriptor bindings would have overlapping array memory
cc: mesa-stable
Acked-by: Emma Anholt <emma@anholt.net>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/15226>