fix(captcha): captcha verify

@@ -49,11 +49,16 @@ module.exports = function(req, res, next) {
     captchaReq.from_json_string(JSON.stringify(params));
 
     // eslint-disable-next-line new-cap
-    client.DescribeCaptchaResult(captchaReq, function(errMsg) {
+    client.DescribeCaptchaResult(captchaReq, function(errMsg, response) {
         if (errMsg) {
             logger.error('tencent captcha fail ', req.user.uid);
             return res.jsonp({ code: 400, message: errMsg.Message });
         }
+
+        if (response.CaptchaCode !== 1) {
+            return res.jsonp({ code: 400, message: '验证码错误'});
+        }
+
         next();
     });
 };