fixed fork列表中存在组织时显示错误

app/views/projects/fork_users.json.jbuilder

@@ -1,7 +1,7 @@
 json.count @forks_count
 json.users do
   json.array! @fork_users.each do |f|
-    user = f.user
+    user = f.user.present? ? f.user : Organization.find_by(id: f.user_id)
     json.id f.fork_project.id
     json.identifier f.fork_project.identifier
     json.name "#{user.try(:show_real_name)}/#{f.fork_project.try(:name)}"