Merge "[Bugfix]fix NullPointException when PackageInfo's verifiers is null " am: 56535ae511 am: 28f1ea0acb

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2264802

Change-Id: I16bbac538a58e8376132b3b9623706447b9d0943
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>