Fixing clang-tidy warning.

Bug: v8:8015
Change-Id: Ibc5a81aea25f797e90db891e90b2977f27e13990
Reviewed-on: https://chromium-review.googlesource.com/1224410
Commit-Queue: Florian Sattler <sattlerf@google.com>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56015}