[scudo] Change Classes definition to uptr.

All of the places that use the Classes array, use it as a uptr.
So change the array to be uptr instead of u32.

Reviewed By: Chia-hungDuan

Differential Revision: https://reviews.llvm.org/D158048

GitOrigin-RevId: ef82a53bbb89e831bb524d1b8a60458abb86ce99
1 file changed