Fix syntax error

Author: Thom Pol

interface/web/mail/mail_domain_edit.php

@@ -192,7 +192,7 @@ function onShowEnd() {
 
 		// Check wether per domain relaying is enabled or not
 		$global_config = $app->getconf->get_global_config('mail');
-		if($global_config['show_per_domain_relay_options'] == 'n' {
+		if($global_config['show_per_domain_relay_options'] == 'n') {
 			$app->tpl->setVar("show_per_domain_relay_options", 1);
 		} else {
 			$app->tpl->setVar("show_per_domain_relay_options", 0);