Fixed: FS#2875 - Punycode domain name is not supports at Crone command line

interface/lib/classes/validate_cron.inc.php

@@ -52,7 +52,7 @@ class validate_cron {
 
 			if($parsed["scheme"] != "http" && $parsed["scheme"] != "https") return $this->get_error($validator['errmsg']);
 
-			if(preg_match("'^([a-z0-9][a-z0-9-]{0,62}\.)+([a-z]{2,30})$'i", $parsed["host"]) == false) return $this->get_error($validator['errmsg']);
+			if(preg_match("'^([a-z0-9][a-z0-9\-]{0,62}\.)+([A-Za-z0-9\-]{2,30})$'i", $parsed["host"]) == false) return $this->get_error($validator['errmsg']);
 		}
 	}