Fix Undo row timeout on Edit Comments screen, props caesarsgrunt, see #4529

git-svn-id: http://svn.automattic.com/wordpress/trunk@12154 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/js/edit-comments.dev.js

@@ -72,6 +72,9 @@ setCommentsList = function() {
 				return false;
 			});
 
+			if ( to )
+				window.clearTimeout(to);
+
 			to = window.setTimeout( function(){
 				$('#trashundo-' + id).fadeOut('slow', function(){ $(this).remove(); });
 			}, 7000 );