bug fix

git-svn-id: https://plugins.svn.wordpress.org/st-category-email-subscribe/trunk@902277 b8457f37-d9ea-0310-8a92-e5e31aec5664
version sync


git-svn-id: https://plugins.svn.wordpress.org/st-category-email-subscribe/trunk@902286 b8457f37-d9ea-0310-8a92-e5e31aec5664