fixed the oh meta image issue

git-svn-id: https://plugins.svn.wordpress.org/squirrly-seo/trunk@999637 b8457f37-d9ea-0310-8a92-e5e31aec5664
fixed the og:image meta image issue

git-svn-id: https://plugins.svn.wordpress.org/squirrly-seo/trunk@999638 b8457f37-d9ea-0310-8a92-e5e31aec5664