Check validity when parse(Level). am: 1c8f560a9b

Original change: https://android-review.googlesource.com/c/platform/system/libvintf/+/2903469

Change-Id: Ic8130a047c29f87f0c6255c9ed9dac7bcd4080f7
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>