Fix a bug with custom fields

git-svn-id: https://plugins.svn.wordpress.org/contact-manager/trunk@853867 b8457f37-d9ea-0310-8a92-e5e31aec5664
Fix a bug with custom fields

git-svn-id: https://plugins.svn.wordpress.org/contact-manager/trunk@853868 b8457f37-d9ea-0310-8a92-e5e31aec5664