[scudo][NFC] Fix clang-tidy warnings am: b91a547f83 am: a4bf8fbeef am: a3d243367d

Original change: https://android-review.googlesource.com/c/platform/external/scudo/+/1698912

Change-Id: Ibafb4f3dcf7a18c5d1c463296af7631d3cac25f9