yuzu: bound the zip directory reads in the DLSS download

The central-directory parser trusted each entry's name, extra and comment lengths and the Zip64
extra field's length, so a malformed directory could make it read past the downloaded buffer. The
data comes from NVIDIA's GitHub release over TLS and the saved files are signature-checked, so the
risk is low.

Stop with an error when an entry runs past the directory, and read Zip64 fields only inside their
record.

Found by CodeRabbit review.

Assisted-by: Claude Opus 5.5 (implementation)
Signed-off-by: Duck912 <350528965+Duck912@users.noreply.github.com>

0 files changed, 0 insertions, 0 deletions