[ZF-7918] Zend_Filter:
[ZF-7918] Zend_Filter:

- suppress warning with Namespaces
Note that using a own error-handler will still show notices, as isReadable itself will throw a notice

git-svn-id: abaeb2b3ba5a94ed391a9405ad7d63d0414021c9@18424 44c647ce-9c0f-0410-b52a-842ac1e357ba

tjohns/zf,svn2github/zend_framework,tjohns/zf,svn2github/zend_framework,tjohns/zf,jupeter/zf1,svn2github/zend_framework,svn2github/zend_framework,svn2github/zend_framework,jupeter/zf1,jupeter/zf1