bug fix, check for wp 4.0

git-svn-id: https://plugins.svn.wordpress.org/linkwelove/trunk@982060 b8457f37-d9ea-0310-8a92-e5e31aec5664
bug fix, check for wp 4.0

git-svn-id: https://plugins.svn.wordpress.org/linkwelove/trunk@982068 b8457f37-d9ea-0310-8a92-e5e31aec5664