WinSock provider function stubs do not return an error code

according to
https://msdn.microsoft.com/en-us/library/windows/desktop/ms742242(v=vs.85).aspx (WSCGetProviderPath)
https://msdn.microsoft.com/en-us/library/windows/desktop/ms742252(v=vs.85).aspx (WSCInstallProvider)
https://msdn.microsoft.com/en-us/library/windows/desktop/ms742231(v=vs.85).aspx (WSCDeinstallProvider)
it might be necessary to fill the error value parameter for calling application. Current implementation only sets last error