s-s-d: Use sizeof_array instead of ad-hoc calculation

utils/start-stop-daemon.c

@@ -483,7 +483,7 @@ parse_signal(const char *signal_str, int *signal_nr)
 	if (parse_integer(signal_str, signal_nr) == 0)
 		return 0;
 
-	for (i = 0; i < sizeof(siglist) / sizeof(siglist[0]); i++) {
+	for (i = 0; i < sizeof_array(siglist); i++) {
 		if (strcmp(signal_str, siglist[i].name) == 0) {
 			*signal_nr = siglist[i].signal;
 			return 0;