Function winapi::um::winbase::GetFirmwareEnvironmentVariableExW

pub unsafe extern "system" fn GetFirmwareEnvironmentVariableExW(
    lpName: LPCWSTR, 
    lpGuid: LPCWSTR, 
    pBuffer: PVOID, 
    nSize: DWORD, 
    pdwAttribubutes: PDWORD
) -> DWORD