Merge branch 'QA_4_3'

ChangeLog

@@ -64,6 +64,7 @@ phpMyAdmin - ChangeLog
 - bug #4763 Database export with more than 512 tables fails
 - bug #4769 Previously set column aliases are destroyed if returned to the same table
 - bug #4752 Incorrect page after creating table
+- bug #4771 Central Columns not working, showing error
 
 4.3.9.0 (2015-02-05)
 - bug #4728 Incorrect headings in routine editor

libraries/central_columns.lib.php

@@ -95,7 +95,11 @@ function PMA_getCentralColumnsCount($db)
                PMA_Util::backquote($central_list_table) . ' '
             . 'WHERE db_name = \'' . $db . '\';';
     $res = $GLOBALS['dbi']->fetchResult($query);
-    return $res[0];
+    if (isset($res[0])) {
+        return $res[0];
+    } else {
+        return 0;
+    }
 }
 /**
  * return the existing columns in central list among the given list of columns