bulk compress jpeg bug fix

git-svn-id: https://plugins.svn.wordpress.org/compress-png-for-wp/trunk@1052822 b8457f37-d9ea-0310-8a92-e5e31aec5664
bulk compress jpeg bug fix

git-svn-id: https://plugins.svn.wordpress.org/compress-png-for-wp/trunk@1052823 b8457f37-d9ea-0310-8a92-e5e31aec5664