headers: use inline version of RtlSecureZeroMemory for UCRT builds

There's an intrinsic version in the kernel32 library. But it's not supposed
to be used with UCRT builds.

RtlSecureZeroMemory is not found in -O0 + UCRT builds without this fix.

In the Windows SDK it's a forced inline version no matter what.
(and there's an ARM version)

Signed-off-by: LIU Hao <lh_mouse@126.com>