2003-06-25  Tor Lillqvist  <tml@iki.fi>

	* glib/giowin32.c (g_io_channel_unix_new): Pass real &optval and
	&optlen to getsockopt() instead of NULL. Don't remember why I
	thought that NULL could be used (as we don't actually use the
	returned value for anything), the Platform SDK documentation
	doesn't imply so.