Merge "libbinder: fix buffer free race" am: c6fc862b am: 245dff1f am: e14ff5c8 am: e9f50efb

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/2210443



Change-Id: Ibf74731e0801ee316b9ac47dc968bca25f2c953d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>