Fixed out of boundary exception in data retry am: bdfd3764

Original change: https://android-review.googlesource.com/c/platform/frameworks/opt/telephony/+/2091572



Change-Id: I4293baf5145a3604726c18d43711d799ed0a5da2
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>