fix user sync check

web/app/views/api_recordings/show.rabl

@@ -3,10 +3,10 @@ object @recording
 attributes :id, :band, :created_at, :duration, :comment_count, :like_count, :play_count, :when_will_be_discarded?, :jam_track_id, :jam_track_initiator_id, :music_session_id, :music_session, :video, :external_video_id
 
 node :fan_access do |recording|
-  if recording.non_active_music_session
+  if recording.non_active_music_session.nil?
     false
   else
-    recording.non_active_music_session.fan_access 
+    recording.non_active_music_session.fan_access
   end
 end