[automerge] Fix NPE 2p: 18179a8762

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17592146

Bug: 227342978
Change-Id: I6ea0f4792197af9fde542c7407b9549a2f3b48c1
Merged-In: Ia21323926bd9db1a6f05461904deb45b4c3dd0bc