Function PstValidate 

pub unsafe fn PstValidate(
    ptargetname: Option<*const UNICODE_STRING>,
    bisclient: bool,
    prequestedissuancepolicy: Option<*const CERT_USAGE_MATCH>,
    phadditionalcertstore: Option<*const HCERTSTORE>,
    pcert: *const CERT_CONTEXT,
    pprovguid: Option<*mut GUID>,
) -> NTSTATUS