Compatible with 3.9

git-svn-id: https://plugins.svn.wordpress.org/wp-copy-data-protector/trunk@911637 b8457f37-d9ea-0310-8a92-e5e31aec5664
improve code

git-svn-id: https://plugins.svn.wordpress.org/wp-copy-data-protector/trunk@911640 b8457f37-d9ea-0310-8a92-e5e31aec5664