(main): Make sure there's some value within each pair of braces.

From-SVN: r5417

gcc/bi-arity.c

@@ -48,6 +48,8 @@ main()
 	       length (v->outputs), length (v->literals));
 	for (n = v->literals; n; n = n->next)
 	  printf ("%scode, ", n->text);
+	if (v->literals == 0)
+	  printf ("0");
 	printf ("}},\n");
       }
   return 0;