tree 96b6206736153134453ccdfcb1f20f200de5b8fa
parent 55c4687599e55f0ed11462b4ef99cbe325923d60
author Lei Zhang <thestig@chromium.org> 1566930995 +0000
committer Chromium commit bot <commit-bot@chromium.org> 1566930995 +0000

Redo a UBSAN fix in AGG.

Slightly cleaner version of https://pdfium-review.googlesource.com/31370
with calculate_area() as:
- a private method instead of a public method.
- a method implemented in the .cpp file.

Also declare the |alpha| variable in the inner-most scope along the way.

Change-Id: I0b8dd2790b3697418d775f31a9d0f74fbaf8234f
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/59910
Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>