Merge "Don't send null data call list response" into tm-dev am: 60643f51 am:...

Merge "Don't send null data call list response" into tm-dev am: 60643f51 am: 4a3ce890 am: 57801815

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/opt/telephony/+/17982015



Change-Id: Idcdba8db57dd7b1617949b5187899725576ebb37
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>