bugfix

git-svn-id: https://plugins.svn.wordpress.org/wp-performance-pack/trunk@1011513 b8457f37-d9ea-0310-8a92-e5e31aec5664
and back to 1.9

git-svn-id: https://plugins.svn.wordpress.org/wp-performance-pack/trunk@1011515 b8457f37-d9ea-0310-8a92-e5e31aec5664