fixed optional card saving

git-svn-id: https://plugins.svn.wordpress.org/woocommerce-securesubmit-gateway/trunk@1014886 b8457f37-d9ea-0310-8a92-e5e31aec5664
fixed optional card saving

git-svn-id: https://plugins.svn.wordpress.org/woocommerce-securesubmit-gateway/trunk@1014888 b8457f37-d9ea-0310-8a92-e5e31aec5664