Problem in Struts example (struts-example.war)

[Thai Thanh Ha]

 Hi all,

 I have found this  code in the Struts example (file:
EditRegistrationAction.java, line: 144)

 if (form == null) {
   ...   
 }

 When EditRegistrationAction.perform() is called, form will be a reference
to a RegistrationForm (*never* be null, because the ActionForm object has
been created before by the ActionServlet object). Is it correct? Why has the
author written this code? Can anyone help me?

 Regards,
 Thai