hostname display

tinysvcmdns.c

@@ -280,7 +280,6 @@ int main(int argc, char *argv[]) {
 
 		printf("cannot find host address\n");
 
-		free(hostname);
 		free(hostname);
 
 		return print_usage();
@@ -288,9 +287,12 @@ int main(int argc, char *argv[]) {
 	}
 
 
+	svr = mdnsd_start(host);
+	if (svr == NULL) return print_usage();
 
 	txt = malloc((argc - 4 + 1) * sizeof(char**));
 	memcpy(txt, argv + 4, (argc - 4) * sizeof(char**));
+	txt[argc + 4] = NULL;
 
 	mdnsd_set_hostname(svr, hostname, host);