Fix the legacy version of `GetDexOptNeeded`. am: b9617f1b4b am: 4e97418eb8 am: 357537a76d am: 44e95cf92a

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

Change-Id: I5973293ff93a7844b2fa51800c4d15003059cc83
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>