Merge "init: Fix signalfd support in WaitToBeReaped()" into main am:...

Merge "init: Fix signalfd support in WaitToBeReaped()" into main am: dfe6c802 am: 7aa32579 am: fe36333f

Original change: https://android-review.googlesource.com/c/platform/system/core/+/2834997



Change-Id: I81a89d4ae603ad942c8858af238583cfbe744d15
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>