Fixed another out of boundary exception in data retry manager am: e75c2588

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/opt/telephony/+/17776097



Change-Id: I60f96101cf725857c5efad689d228c2092cc6ef0
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>