初始化 cookie 默认值

@@ -9,7 +9,19 @@ var info = window.cookie('order-info');
 try {
     info = JSON.parse(info);
 } catch (e) {
-    info = {};
+    info = {
+        deliveryId: null,
+        deliveryTimeId: null,
+        paymentTypeId: null,
+        yohoCoin: null,
+        addressId: null,
+        couponCode: null,
+        couponValue: null,
+        invoice: null,
+        invoiceText: null,
+        invoiceType: null,
+        msg: null
+    };
 }
 
 exports.orderInfo = function(key, value) {