Audit yes(1)

Oh well, time to simplify the loop.
Also, change the comment on unreachable code to something more clear.

yes.c

@@ -19,14 +19,10 @@ main(int argc, char *argv[])
 		usage();
 	} ARGEND;
 
-	if (argc == 0) {
-		for (;;)
-			puts("y");
-	} else {
-		for (i = 0; ; i++, i %= argc) {
-			printf("%s", argv[i]);
-			putchar(i == argc - 1 ? '\n' : ' ');
-		}
+	for (i = 0; ; i++, i %= argc ? argc : 1) {
+		fputs(argc ? argv[i] : "y", stdout);
+		putchar((!argc || i == argc - 1) ? '\n' : ' ');
 	}
-	return 1; /* should not reach */
+
+	return 1; /* not reached */
 }