tree c3357fb17d0a80d7b9092973f37f69ca8bc4436e
parent b8486f5092ec3c0760a08ff1ecf76ad601b8609d
author fmalita <fmalita@chromium.org> 1464311424 -0700
committer Commit bot <commit-bot@chromium.org> 1464311424 -0700

Silence ASAN int32 overflow warning

It's fine to overflow SK_MaxS32 by one, the subsequent cast ensures
correct clamping.  But we need to cast earlier in order to make ASAN
happy.

TBR=mtklein@google.com,reed@google.com
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2013243002

Review-Url: https://codereview.chromium.org/2013243002