[ZF-12005] Fix incorrect filling percentage calculation in Zend_Cache_Backend_WinCache

git-svn-id: http://framework.zend.com/svn/framework/standard/trunk@24651 44c647ce-9c0f-0410-b52a-842ac1e357ba

library/Zend/Cache/Backend/WinCache.php

@@ -185,7 +185,7 @@ class Zend_Cache_Backend_WinCache extends Zend_Cache_Backend implements Zend_Cac
     {
         $mem = wincache_ucache_meminfo();
         $memSize = $mem['memory_total'];
-        $memUsed = $mem['memory_free'];
+        $memUsed = $memSize - $mem['memory_free'];
         if ($memSize == 0) {
             Zend_Cache::throwException('can\'t get WinCache memory size');
         }