Merge "libafw: Use std::free explicitly for overlays" into rvc-dev am: 5dc36b2f am: 5d80a03b am: ca449745

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11959160

Change-Id: I0ef264e3d38b3cb2ada9fbd3cf0fa81a88016c42