Merge "libsync: Fix a double-free." am: 16dd491aac Change-Id: I3df91f1d203423dd5f0ca6335812630c25d8bc01 Cr-Mirrored-From: https://chromium.googlesource.com/aosp/platform/system/core Cr-Mirrored-Commit: 12f6c4809e67b8ebeeae49e64558c91f5f9a4d50