Merge "libafw: Use std::free explicitly for overlays" into rvc-dev am: 5dc36b2f am: aec9e504

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

Change-Id: Ib9991bb80ba74446da3d9fc65550cac07e93bb8c