Fix new thread notifications breaking script

Tried to access invalid child.

js/mod/recent-posts-auto-reload.js

@@ -220,7 +220,11 @@ $(document).ready(function(){
                         }
                         // Notify on all posts, not just the first unread
                         if (notify === "all") {
-                            var body = $(this).children('.body').html().replace(/<br\s*[\/]?>/gi, "\n");
+                            if ($(this).hasClass('thread')){
+                                var body = $(this).children('.post').children('.body').html().replace(/<br\s*[\/]?>/gi, "\n");
+                            } else {
+                                var body = $(this).children('.body').html().replace(/<br\s*[\/]?>/gi, "\n");
+                            }
                             var n = new Notification("New reply to "+title, {body: $('<div/>').html(body).text()});
                         }
                         if ($("div.post,div.thread").length > 1){