[scudo] Use cast on calls to __builtin_umul_overflow/__builtin_umull_overflow

Platforms may define uintptr_t differently, so perform an explicit cast

Differential Revision: https://reviews.llvm.org/D121852

GitOrigin-RevId: 9343fc76133bfdd0e4003e58403a79b140ec1b25
Change-Id: Ia586cba305a28128b2ed9aa16b96dbb1f8f18b5c
1 file changed