Fix the legacy version of `GetDexOptNeeded`. am: b9617f1b4b am: 4e97418eb8 am: 357537a76d

Original change: https://android-review.googlesource.com/c/platform/art/+/2144963

Change-Id: I43a12aa74596b7bfd53deaf63cf3c72a13ac8de1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>