Minor fix.

git-svn-id: https://plugins.svn.wordpress.org/cleantalk-spam-protect/trunk@956400 b8457f37-d9ea-0310-8a92-e5e31aec5664
Fixed message catch logic for CF7.

git-svn-id: https://plugins.svn.wordpress.org/cleantalk-spam-protect/trunk@956401 b8457f37-d9ea-0310-8a92-e5e31aec5664