pub unsafe extern "system" fn CredUnPackAuthenticationBufferA( dwFlags: DWORD, pAuthBuffer: PVOID, cbAuthBuffer: DWORD, pszUserName: LPSTR, pcchlMaxUserName: *mut DWORD, pszDomainName: LPSTR, pcchMaxDomainName: *mut DWORD, pszPassword: LPSTR, pcchMaxPassword: *mut DWORD) -> BOOL