NTSTATUS __stdcall VfZwUnloadDriver(_UNICODE_STRING *DriverServiceName){
VOID *retaddr;
if( (unsigned int)ViZwShouldCheck() )
ViZwCheckUnicodeString(DriverServiceName, retaddr);
return((__int64(__fastcall *)(_UNICODE_STRING *))pXdvZwUnloadDriver)(DriverServiceName);
}