require_once() replaced with require() in the XHTML template system as requested in issue #385.

git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@3188 44740490-163a-0410-bde0-09ae8108e29a

lib/SimpleSAML/XHTML/Template.php

@@ -572,7 +572,7 @@ class SimpleSAML_XHTML_Template {
 	public function show() {
 
 		$filename = $this->findTemplatePath($this->template);
-		require_once($filename);
+		require($filename);
 	}