[ZF-7874] Zend_Mail_Transport should not add charset parameter to multipart Content-Type header

git-svn-id: http://framework.zend.com/svn/framework/standard/trunk@18759 44c647ce-9c0f-0410-b52a-842ac1e357ba

library/Zend/Mail/Transport/Abstract.php

@@ -140,7 +140,7 @@ abstract class Zend_Mail_Transport_Abstract
             }
 
             $this->_headers['Content-Type'] = array(
-                $type . '; charset=' . $this->_mail->getCharset() . ';'
+                $type . ';'
                 . $this->EOL
                 . " " . 'boundary="' . $boundary . '"'
             );