CSS minify bug fixed

git-svn-id: https://plugins.svn.wordpress.org/async-js-and-css/trunk@782569 b8457f37-d9ea-0310-8a92-e5e31aec5664
version incremented

git-svn-id: https://plugins.svn.wordpress.org/async-js-and-css/trunk@782570 b8457f37-d9ea-0310-8a92-e5e31aec5664