[dartfuzz] Fix ffi check in getMethods
[dartfuzz] Fix ffi check in getMethods

Change-Id: Ib3818f7a05c5d0edc9491ef45d2162c6b8a1fa71
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/125921
Commit-Queue: Fizaa Luthra <1d2772b43df6b07073ecf276af9421dbd12642c7@google.com>
Reviewed-by: Aart Bik <293afa0533434225484ba3f9bf2859340baba6ea@google.com>

dart-lang/sdk,dart-lang/sdk,dartino/dart-sdk,dart-archive/dart-sdk,dart-archive/dart-sdk,dart-lang/sdk,dartino/dart-sdk,dart-archive/dart-sdk,dart-lang/sdk,dartino/dart-sdk,dart-lang/sdk,dart-lang/sdk,dart-archive/dart-sdk,dart-archive/dart-sdk,dart-archive/dart-sdk,dartino/dart-sdk,dartino/dart-sdk,dart-lang/sdk,dartino/dart-sdk,dart-archive/dart-sdk,dart-archive/dart-sdk,dartino/dart-sdk,dart-archive/dart-sdk,dartino/dart-sdk,dartino/dart-sdk,dart-lang/sdk