Fix minor issue on checkout page for woocommerce2.1

git-svn-id: https://plugins.svn.wordpress.org/product-licensing-system/trunk@861534 b8457f37-d9ea-0310-8a92-e5e31aec5664
Fix minor issue on checkout page for woocommerce2.1

git-svn-id: https://plugins.svn.wordpress.org/product-licensing-system/trunk@861535 b8457f37-d9ea-0310-8a92-e5e31aec5664