Fixed another out of boundary exception in data retry manager am: 2c9d0f2b

Original change: https://android-review.googlesource.com/c/platform/frameworks/opt/telephony/+/2091801



Change-Id: Ie2205cfc974709c18aa18fe05c921e4fdb2286df
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>