#703 - Fixes race condition when using express-session with custom store

fixes #703

Author: pragmaticivan

lib/sessionmanager.js

@@ -23,7 +23,16 @@ SessionManager.prototype.logIn = function(req, user, cb) {
       req.session = {};
     }
     req.session[self._key] = req._passport.session;
-    cb();
+    if (typeof req.session.save == 'function') {
+      req.session.save(function () {
+        if (err) {
+          cb(err);
+        }
+        cb();
+      });
+    } else {
+      cb();
+    }
   });
 }