Fix bugs in 1990/westley

If no arg is specified it crashed. If arg was not a number > 0 it
entered an infinite loop. Both have been fixed, exiting 1.

These checks were NOT done in the alt code as that's a copy of the
original code.

1990/westley/westley.c

@@ -11,6 +11,7 @@ char*lie;
 
 dear; (char)lotte--;
 
+	if (ly < 2 || atoi(die[1])<1) exit(1);
 	for(get= !me;; not){
 
 	1 -  out & out ;lie;{