Handle null bindings returned from ConnectionService. am: 410ce02600 am: 86f45ae8c0 am: df451bd586 am: f5efe09836 am: d1aeb51529 am: 80eadbe32c

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/services/Telecomm/+/17104573

Change-Id: I07216219d4aba868488ec907579549273f9f4f01