No need to require_once footer

It is the last thing executed anyway (ends with exit).

db_qbe.php

@@ -98,7 +98,7 @@ $tbl_result     = PMA_DBI_query('SHOW TABLES FROM ' . PMA_backquote($db) . ';',
 $tbl_result_cnt = PMA_DBI_num_rows($tbl_result);
 if (0 == $tbl_result_cnt) {
     PMA_Message::error(__('No tables found in database.'))->display();
-    require_once './libraries/footer.inc.php';
+    require './libraries/footer.inc.php';
     exit;
 }
 
@@ -939,5 +939,5 @@ if (!empty($qry_orderby)) {
 /**
  * Displays the footer
  */
-require_once './libraries/footer.inc.php';
+require './libraries/footer.inc.php';
 ?>