Update Wuffs version

Bug: skia:8764
Bug: skia:8767
Bug: skia:8764

This pulls in the Wuffs bug fix:
https://github.com/google/wuffs/commit/ab7d6de3180b734169f48b5a3a4fda7a363cc083
"Let Wuffs compile with MSVC (Microsoft Visual C++)".

This also pulls in fixes for
https://github.com/google/wuffs/issues/20
"Check for "not enough pixel data" and return an Error or Warning"

Change-Id: Ie75e57504f1ec872418e8851e10de9159f714bc5
Reviewed-on: https://skia-review.googlesource.com/c/193200
Reviewed-by: Leon Scroggins <scroggo@google.com>
Commit-Queue: Leon Scroggins <scroggo@google.com>
2 files changed