Bug 1128882 - Fix welcomeback restore button not working. r=jaws

browser/components/migration/content/aboutWelcomeBack.xhtml

@@ -66,7 +66,9 @@
         </tree>
 
         <hbox xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul" class="button-container">
-          <button class="primary" label="&welcomeback2.restoreButton;"
+          <button class="primary"
+                  id="errorTryAgain"
+                  label="&welcomeback2.restoreButton;"
                   accesskey="&welcomeback2.restoreButton.access;"
                   oncommand="restoreSession();"/>
         </hbox>