Merge "libbinder: fix type of return value from {send,read}_msg" am: 2a2071242b am: dcbef39392

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/2173482

Change-Id: Ib59422abbf83bda726f392ff3373b4ba50598e18
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>