scudo: Store header on deallocation before retagging memory. am: e8e24c7c07 am: 4a27ba0f04 am: d70642b4fa am: b259355a85

Original change: https://android-review.googlesource.com/c/platform/external/scudo/+/1685703

Change-Id: I648e887fd08c6e14b8031e656a2ab6d44bb657c7