Move setupwizard modify handler code.

Move setupwizard code into the conditional below it. You can only work
on pPage if it isn't a null pointer anyway, to my mind this looks a
lot cleaner.

Change-Id: If8d910c15c5a1c1da5eb204b5922d074c454978b
Reviewed-on: https://gerrit.libreoffice.org/2890Reviewed-by: Fridrich Strba <fridrich@documentfoundation.org>
Tested-by: Fridrich Strba <fridrich@documentfoundation.org>

dbaccess/source/ui/dlg/dbwizsetup.cxx

@@ -587,13 +587,13 @@ TabPage* ODbTypeWizDialogSetup::createPage(WizardState _nState)
             break;
     }
 
-    if (pPage && (_nState != PAGE_DBSETUPWIZARD_INTRO) && (_nState != PAGE_DBSETUPWIZARD_AUTHENTIFICATION))
-    {
-        pPage->SetModifiedHandler(LINK( this, ODbTypeWizDialogSetup, ImplModifiedHdl ) );
-    }
-
     if ( pPage )
     {
+        if ((_nState != PAGE_DBSETUPWIZARD_INTRO) && (_nState != PAGE_DBSETUPWIZARD_AUTHENTIFICATION))
+        {
+            pPage->SetModifiedHandler(LINK( this, ODbTypeWizDialogSetup, ImplModifiedHdl ) );
+        }
+
         pPage->SetServiceFactory( m_pImpl->getORB() );
         pPage->SetAdminDialog(this, this);