The functions take a WAIT_TYPE argument instead of a BOOLEAN.
This causes test failures in kernel32:sync when compiled with clang and optimizations enabled, as it optimizes away clearing the higher bytes of the register used for the WAIT_TYPE argument, leaving set bits in the higher bytes ending up with an invalid WAIT_TYPE value.
-- v2: ntdll: Fix (Nt|Zw)WaitForMultipleObjects signature.