Fix CFI by removing extra cast TBR=jshin@chromium.org Bug: 1145094 Change-Id: I35483de9d2473df8177be32a036ba9583158afa6 Reviewed-on: https://chromium-review.googlesource.com/c/chromium/deps/icu/+/2517182 Reviewed-by: Frank Tang <ftang@chromium.org> Reviewed-on: https://fuchsia-review.googlesource.com/c/third_party/icu/+/449857 Reviewed-by: Fabrice de Gans-Riberi <fdegans@google.com>