filter fixed

git-svn-id: https://plugins.svn.wordpress.org/affiliate/trunk@921133 b8457f37-d9ea-0310-8a92-e5e31aec5664
tagged 1.1.2

git-svn-id: https://plugins.svn.wordpress.org/affiliate/trunk@921134 b8457f37-d9ea-0310-8a92-e5e31aec5664