Fix ANGLE_DISABLE_POOL_ALLOC build Broken by crrev.com/c/3206255 Fails rolling into Chromium in crrev.com/c/3208847 on linux-libfuzzer-asan-rel and win-libfuzzer-asan-rel. Bug: angleproject:3167 Change-Id: If5d085492dfa87120c7c24a7102161d625d68e4e Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3209966 Reviewed-by: Yuly Novikov <ynovikov@chromium.org> Commit-Queue: Yuly Novikov <ynovikov@chromium.org>