Merge "fix WifiUtils:isNetworkLockedDown() null pointer issue" am: 956f288d1d

Original change: https://android-review.googlesource.com/c/platform/packages/apps/Settings/+/2334743

Change-Id: I6b1d18248dc3026bda0e02e1d43fc350f1e9a680
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>