Fix category import see BT#10052

main/exercice/testcategory.class.php

@@ -500,8 +500,6 @@ class Testcategory
             $categories[$data['category_id']][] = $data['question_id'];
         }
 
-
-
         if (!empty($categoriesAddedInExercise)) {
             $newCategoryList = array();
             foreach ($categoriesAddedInExercise as $category) {
@@ -540,6 +538,10 @@ class Testcategory
 
     /**
      * return a tab of $in_number random elements of $in_tab
+     *
+     * @param $in_tab
+     * @param $in_number
+     * @return array
      */
 	public static function getNElementsFromArray($in_tab, $in_number)
 	{