Confirm we are dealing with an Imagick object. see #24539.



git-svn-id: http://core.svn.wordpress.org/trunk@24765 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Remove debug.



git-svn-id: http://core.svn.wordpress.org/trunk@24766 1a063a9b-81f0-0310-95a4-ce76da25c4cd