Merge pull request #3623 from riking/patch-6

FIX: Change post owner of deleted post, take 3

app/services/post_owner_changer.rb

@@ -16,7 +16,6 @@ class PostOwnerChanger
         @topic.user = @new_owner if post.is_first_post?
 
         if post.user == nil
-          post.recover!
           @topic.recover! if post.is_first_post?
         end
         post.topic = @topic