phoneReg.expire 读不到设置默认值为0

@@ -230,7 +230,7 @@ class Reg {
 
     sendCodeBusyBoy(req, res, next) {
         let count = _.get(req.session, 'phoneReg.count');
-        let expire = _.get(req.session, 'phoneReg.expire');
+        let expire = _.get(req.session, 'phoneReg.expire') || 0;
 
         if (count) {
             return next();