Fix vulnerability in CallRedirectionService. am: 29b52e3cd0 am: 1637f8e358

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/services/Telecomm/+/24151559

Change-Id: I25812fc8cdeea0c8666279ce513c3d6bd33e2614
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>