Pass the `current_user` to the topic saved event

app/controllers/posts_controller.rb

@@ -85,7 +85,7 @@ class PostsController < ApplicationController
       [false, MultiJson.dump(errors: post_creator.errors.full_messages)]
 
     else
-      DiscourseEvent.trigger(:topic_saved, post.topic, params)
+      DiscourseEvent.trigger(:topic_saved, post.topic, params, current_user)
       post_serializer = PostSerializer.new(post, scope: guardian, root: false)
       post_serializer.draft_sequence = DraftSequence.current(current_user, post.topic.draft_key)
       [true, MultiJson.dump(post_serializer)]

app/controllers/topics_controller.rb

@@ -135,7 +135,7 @@ class TopicsController < ApplicationController
       success = PostRevisor.new(first_post, topic).revise!(current_user, changes, validate_post: false)
     end
 
-    DiscourseEvent.trigger(:topic_saved, topic, params)
+    DiscourseEvent.trigger(:topic_saved, topic, params, current_user)
 
     # this is used to return the title to the client as it may have been changed by "TextCleaner"
     success ? render_serialized(topic, BasicTopicSerializer) : render_json_error(topic)