[ZF-10952]: fix test which stop output buffering when complete test execution

git-svn-id: http://framework.zend.com/svn/framework/standard/trunk@24314 44c647ce-9c0f-0410-b52a-842ac1e357ba

tests/Zend/Cache/PageFrontendTest.php

@@ -205,6 +205,7 @@ class Zend_Cache_PageFrontendTest extends PHPUnit_Framework_TestCase {
         $this->_instance->setOption('regexps', $regex);
         $this->_instance->setOption('caching', false);
         $this->_instance->start('zf10952');
+        ob_get_clean();
     }
 }