Fix array-related errorprone warnings am: 1aba0b0461

Original change: https://android-review.googlesource.com/c/platform/packages/apps/Messaging/+/2186297

Change-Id: I27efca401b1b6332cc3fcc037a4bd3f6043158a4
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>