patch #3025161 [core] Prevent sending of unnecessary cookies

ChangeLog

@@ -84,6 +84,8 @@ $Id$
 - bug #3004216 [CSS] Field attributes use inline CSS
 - patch #2999595, rfe #2998130 [interface] Cleanup navigation frame.
 - [core] Update library PHPExcel to version 1.7.3c
+- patch #3025161 [core] Prevent sending of unnecessary cookies, 
+  thanks to Piotr Przybylski  - crackpl
 
 3.3.5.0 (not yet released)
 - patch #2932113 [information_schema] Slow export when having lots of

libraries/Config.class.php

@@ -1086,11 +1086,14 @@ class PMA_Config
         if ($validity == null) {
             $validity = 2592000;
         }
-        if (strlen($value) && null !== $default && $value === $default
-         && isset($_COOKIE[$cookie])) {
-            // remove cookie, default value is used
+        if (strlen($value) && null !== $default && $value === $default) {
+            // default value is used
+            if (isset($_COOKIE[$cookie])) {
+                // remove cookie
                 return $this->removeCookie($cookie);
             }
+            return false;
+        }
 
         if (! strlen($value) && isset($_COOKIE[$cookie])) {
             // remove cookie, value is empty