Merge "Fix warnings in libs/binder." am: b54c4d3712 am: 27aea7119b am: 3a3f156409

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/1571379

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: Ide52e6d26f75e9fd6e4c9ea82d1dd101eb8854f6