[automerger skipped] Merge "DO NOT MERGE ANYWHERE: Do nullptr check on source filter" am: ce765a74 -s ours am: c0060083 -s ours am: 9e2e3c3c -s ours

am skip reason: subject contains skip directive

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1712728

Change-Id: I25662910353d395c69629648b45f3dc84d75d823