Minor - format code

main/document/download.php

@@ -14,6 +14,8 @@ $this_section = SECTION_COURSES;
 // Protection
 api_protect_course_script();
 
+$_course = api_get_course_info();
+
 if (!isset($_course)) {
     api_not_allowed(true);
 }
@@ -26,7 +28,7 @@ $doc_url = str_replace(' ', '+', $doc_url);
 
 $doc_url = str_replace(array('../', '\\..', '\\0', '..\\'), array('', '', '', ''), $doc_url); //echo $doc_url;
 
-if (strpos($doc_url, '../') OR strpos($doc_url, '/..')) {
+if (strpos($doc_url, '../') || strpos($doc_url, '/..')) {
     $doc_url = '';
 }