small update

git-svn-id: https://plugins.svn.wordpress.org/jeba-ajax-mailchimp/trunk@993269 b8457f37-d9ea-0310-8a92-e5e31aec5664
another correction

git-svn-id: https://plugins.svn.wordpress.org/jeba-ajax-mailchimp/trunk@993270 b8457f37-d9ea-0310-8a92-e5e31aec5664