Support appending routes within the admin section by plugins

lib/post_destroyer.rb

@@ -116,16 +116,15 @@ class PostDestroyer
     end
   end
 
-
   private
 
   def make_previous_post_the_last_one
     last_post = Post.where("topic_id = ? and id <> ?", @post.topic_id, @post.id).order('created_at desc').limit(1).first
     if last_post.present?
       @post.topic.update_attributes(
-          last_posted_at: last_post.created_at,
-          last_post_user_id: last_post.user_id,
-          highest_post_number: last_post.post_number
+        last_posted_at: last_post.created_at,
+        last_post_user_id: last_post.user_id,
+        highest_post_number: last_post.post_number
       )
     end
   end