Merge "Fix NPE in LinkBandwidthEstimator" into udc-dev am: b61bb2ef am: 4df2dfa5

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/opt/telephony/+/21616741



Change-Id: Iacff6218a754d470dd064a3e5b619264d1abbb86
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>