Clear google session if user data is not found

lib/routes/login.js

@@ -119,6 +119,7 @@ module.exports = function(crowi, app) {
         User.findUserByGoogleId(googleId, function(err, userData) {
           debug('findUserByGoogleId', err, userData);
           if (!userData) {
+            clearGoogleSession(req);
             return loginFailure(req, res);
           }
           return loginSuccess(req, res, userData);