Merge "Don't send null data call list response" into tm-dev am: 516a7d21 am:...

Merge "Don't send null data call list response" into tm-dev am: 516a7d21 am: 08bb1d62 am: 0375d784

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/opt/telephony/+/17803170



Change-Id: If73afb43b36c525d243fcd668e3c80962622c260
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>