ZF-9450: Octal notations will be not correct decoded

Description

Example

\304 => Ä \326 => Ö \334 => Ü


$str = "\\304\\326\\334";
echo Zend_Pdf_Element_String::unescape($str);

Expected output ÄÖÜ, currently is 0FN.

Comments

fixed, added specific test