Fix vulnerability in CallRedirectionService. am: 29b52e3cd0 am: 1637f8e358 am: 72e92682bf

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

Change-Id: I331520dfd221390088db51b0f597eedf06008f3e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>