Add missing comment doc in post.php

post.php

@@ -147,9 +147,9 @@ function db_select_threads_minimal($board, $thread_id)
  * Inserts a new report.
  *
  * @param string $ip Ip of the user sending the report.
- * @param [type] $board Board of the reported thread. MUST ALREADY BE SANITIZED.
- * @param [type] $post_id Post reported.
- * @param [type] $reason Reason of the report.
+ * @param string $board Board of the reported thread. MUST ALREADY BE SANITIZED.
+ * @param int $post_id Post reported.
+ * @param string $reason Reason of the report.
  * @return void
  */
 function db_insert_report($ip, $board, $post_id, $reason)