Merge "Revert "init: Fix a race condition in KillProcessGroup()"" am:...

Merge "Revert "init: Fix a race condition in KillProcessGroup()"" am: 4cdb6cf4 am: 455aba6a am: cfe1da16

Original change: https://android-review.googlesource.com/c/platform/system/core/+/2302566



Change-Id: I1d0572eb3a500e7a86dcb97fa7ee0e4f8e524ab5
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>