[automerge] Fix NPE 2p: 73d533592a

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17592027

Bug: 227342978
Change-Id: I195034aa73c4facedbf792b38b037e741abaf3c4
Merged-In: Ia21323926bd9db1a6f05461904deb45b4c3dd0bc