3154 Nonconforming tolower and toupper with UTF-8 locales

@@ -159,10 +159,11 @@
 }
 
 /*
  * This is used for 8-bit encodings.
  */
+/* ARGSUSED */
 int
 towide_none(wchar_t *c, const char *mb, unsigned n)
 {
         _NOTE(ARGUNUSED(n));