Fixes bug where wrong arguments were being passed to Horde_Imap_Client_Exception_ServerResponse::__construct() (Github issue #3)
https://github.com/codebykat/wp-post-by-email/issues/3

git-svn-id: http://gsoc.svn.wordpress.org/2013/codebykat/post-by-email/trunk@2336 f69abe3c-2ee2-4550-9a6d-17bd458115be