tree ac34d6c8f8f77c2d613cad9e9e740954ce06e1a0
parent e9cd157725c374c3eb86680258a9c9a1c0d95687
author Tom Sepez <tsepez@google.com> 1774894575 -0700
committer Pdfium LUCI CQ <pdfium-scoped@luci-project-accounts.iam.gserviceaccount.com> 1774894575 -0700

Elide some indexing checks in ProgressiveDecoder::GifReadScanline()

Iterate across an entire subspan created at top, as this does one
CHECK() instead of a CHECK() per pixel the optimizer left in place.

Change-Id: I42e715a27f2e96e0914d38613f9b4325d01a5fdc
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/145372
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Tom Sepez <tsepez@chromium.org>