[automerger skipped] Add a null pointer check to the VcnConfig am: feab41aa...

[automerger skipped] Add a null pointer check to the VcnConfig am: feab41aa -s ours am: 408f03de -s ours am: 77c07cdd -s ours am: dd35bd2d -s ours

am skip reason: Merged-In I0cbab6e38f68d8c669db2ddb324b013baa93204a with SHA-1 b5ec6791 is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23621625



Change-Id: Ida97b78a16bb1a1efefa1a782f640016b2180090
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>