Fix a warning on Linux BUG= Change-Id: I5c4f5df14321644d7ac42af6059400ae43d0fe4d Reviewed-on: https://chromium-review.googlesource.com/295721 Reviewed-by: Geoff Lang <geofflang@chromium.org> Tryjob-Request: Geoff Lang <geofflang@chromium.org> Tested-by: Corentin Wallez <cwallez@chromium.org>