afcd4be8a7
based on discussion in https://github.com/libressl/portable/issues/266 and https://bugs.python.org/issue23524 adjust the compat layer for Windows to use _get_osfhandle in combination with _set_thread_local_invalid_parameter_handler if applicable to more reliably determine if a handle is a socket, file, or closed socket. This prevents assertions when calling tls_close on an already-closed socket.