Update screen view is reset while language is switched.

BUG=none
TODO=none

Review URL: http://codereview.chromium.org/736001

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@41047 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/chromeos/login/wizard_controller.cc

@@ -179,6 +179,7 @@ void WizardController::OnSwitchLanguage(std::string lang) {
   network_screen_.reset();
   login_screen_.reset();
   account_screen_.reset();
+  update_screen_.reset();
   contents_->RemoveAllChildViews(true);
 
   // Switch the locale.