Telecom:fix NPE problem to avoid telecom process crash. am: baccd54a

Original change: https://android-review.googlesource.com/c/platform/packages/services/Telecomm/+/3095059



Change-Id: I0ad4b223a3efd54397b75a7b8d8c13146d41a42a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>