Win32: Fix rbimpl_size_mul_overflow on arm64
rbimpl_size_mul_overflow
_umul128 is specific to x86_64 platform, see higher words by __umulh on arm64.
_umul128
__umulh
Added by
Win32: Fix
rbimpl_size_mul_overflowon arm64_umul128is specific to x86_64 platform, see higher words by__umulhon arm64.