compat with 3.9

git-svn-id: https://plugins.svn.wordpress.org/facebook-photo-fetcher/trunk@895547 b8457f37-d9ea-0310-8a92-e5e31aec5664
2.1.15

git-svn-id: https://plugins.svn.wordpress.org/facebook-photo-fetcher/trunk@895611 b8457f37-d9ea-0310-8a92-e5e31aec5664