Guard against bogus return value from strxfrm(). For instance Microsoft's

Guard against bogus return value from strxfrm(). For instance Microsoft's

2004-08-21  Tor Lillqvist  <tml@iki.fi>

	* glib/gunicollate.c (g_utf8_collate_key): Guard against bogus
	return value from strxfrm(). For instance Microsoft's strxfrm()
	returns INT_MAX on errors. (#141124)