Merge branch 'QA_4_8'

Signed-off-by: Maurício Meneghini Fauth <mauriciofauth@gmail.com>

ChangeLog

@@ -27,6 +27,7 @@ phpMyAdmin - ChangeLog
 - issue #14571 "No database selected" - DROP a view
 - issue #14636 Move operation causes SELECT * FROM `undefined`
 - issue #14630 Enum '0' produces incorrect search SQL
+- issue #14223 Fix TypeError in database designer
 
 4.8.3 (2018-08-22)
 - issue #14314 Error when naming a database '0'

libraries/classes/Database/Designer/Common.php

@@ -288,7 +288,7 @@ class Common
     {
         $cfgRelation = $this->relation->getRelationsParam();
         if (! $cfgRelation['pdfwork']) {
-            return null;
+            return array();
         }
 
         $query = "