[scudo] Make Scudo compile for C++20 am: c8c39af172 am: c32c25e333 am: 20549ed7cb am: b84c6d56cb

Original change: https://android-review.googlesource.com/c/platform/external/scudo/+/1950253

Change-Id: I83898460db52356fea5831ea6a9b50addb9bbf45