Fix use-after-free issue for dexfile am: 1ee0290eed

Original change: https://googleplex-android-review.googlesource.com/c/platform/art/+/19911435

Change-Id: I458a20d6b1a4587fd3d280555f59dd723ffa5498
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>