avoid using already defined variable

data/cubes.comment.js

@@ -45,8 +45,7 @@
 	    }
         });
     } else { // comment cancelled, close div holding the form
-        var comment = jQuery('#comment' + eid + 'Slot');
-        comment.remove();
+        jQuery('#comment' + eid + 'Slot').remove();
     }
 }