FIX register with validate email

app/controllers/concerns/register_helper.rb

@@ -3,7 +3,7 @@ module RegisterHelper
 
   def autologin_register(username, email, password, platform= 'forge')
     result = {message: nil, user: nil}
-    email ||=  "#{username}@example.org"
+    email =  email.blank? ? "#{username}@example.org" : email
 
     user = User.find_by(login: username)
     user ||= User.new(admin: false, login: username, mail: email, type: "User")