Bug 1610271 - Null-check updateManager in UrlbarProviderSearchTips.lastBrowserUpdateDate. r=adw

Differential Revision: https://phabricator.services.mozilla.com/D60434

--HG--
extra : moz-landing-system : lando

browser/components/urlbar/UrlbarProviderSearchTips.jsm

@@ -412,7 +412,7 @@ async function lastBrowserUpdateDate() {
   // Get the newest update in the update history. This isn't perfect
   // because these dates are when updates are applied, not when the
   // user restarts with the update. See bug 1595328.
-  if (updateManager.updateCount) {
+  if (updateManager && updateManager.updateCount) {
     let update = updateManager.getUpdateAt(0);
     return update.installDate;
   }