add cwp7CheckLimit

cwp7.php

@@ -566,6 +566,9 @@ function cwp7_addDomain($params) {
 	if(!filter_var($_POST['d'], FILTER_VALIDATE_DOMAIN, FILTER_FLAG_HOSTNAME)){
 		return 'Error: invalid domain name';
 	}
+	if(cwp7CheckLimit($params, 'domain')) {
+		return 'Error: domain limit exceeded';
+	}
 	$vars['user'] = $params['username'];
 	$vars['name'] = $_POST['d'];
 	$vars['type'] = 'domain';