only get keys if private key returns null

src/services/cryptoService.js

@@ -133,7 +133,7 @@ function initCryptoService(constantsService) {
         var self = this;
         chrome.storage.local.get('encPrivateKey', function (obj) {
             if (!obj || !obj.encPrivateKey) {
-                deferred.reject('Cannot get enc private key.');
+                deferred.resolve(null);
                 return;
             }
 

src/services/syncService.js

@@ -118,7 +118,7 @@ function initSyncService() {
             self.cryptoService.getPrivateKey().then(function (privateKey) {
                 setKeys(!!privateKey, response, deferred);
             }, function () {
-                setKeys(false, response, deferred);
+                setKeys(true, response, deferred);
             });
         }, function () {
             deferred.reject();