fix login qq error

@@ -33,38 +33,33 @@ function doPassportCallback(req, res, user) {
         refer = config.siteUrl;
     }
     if (user.openId) {
-        let signinByOpenID;
-
         user.nickname = _.trim(user.nickname);
 
         if (user.sourceType === 'wechat') {
-
-            // PC 的微信登录之前使用了 open_id, 所以需要特别的接口处理
-            signinByOpenID = AuthHelper.signinByWechat(
-                user.nickname, user.openId, user.unionId, user.sourceType, shoppingKey);
-        } else {
-            signinByOpenID = AuthHelper.signinByOpenID(
-                user.nickname, user.openId, user.sourceType, shoppingKey);
+            // PC 的微信登录使用unionId
+            user.openId = user.unionId;
         }
 
-        return signinByOpenID.then((result) => {
-            if (result.code !== 200) {
-                return Promise.reject(result);
-            }
-            if (result.data['is_bind'] && result.data['is_bind'] === 'N') { //eslint-disable-line
-                return helpers.urlFormat('/passport/thirdlogin/index', {
-                    openId: user.unionId || user.openId,
-                    sourceType: user.sourceType,
-                    refer: refer
-                });
-            } else if (result.code === 200 && result.data.uid) {
-                return AuthHelper.syncUserSession(result.data.uid, req, res).then(() => {
-                    return refer;
-                });
-            }
-        }).then((redirectTo) => {
-            return res.redirect(redirectTo);
-        });
+        return AuthHelper.signinByOpenID(user.nickname, user.openId, user.sourceType, shoppingKey)
+            .then((result) => {
+                if (result.code !== 200) {
+                    return res.redirect(config.siteUrl);
+                }
+                if (result.data['is_bind'] && result.data['is_bind'] === 'N') { //eslint-disable-line
+                    return helpers.urlFormat('/passport/thirdlogin/index', {
+                        openId: user.unionId || user.openId,
+                        sourceType: user.sourceType,
+                        refer: refer
+                    });
+                } else if (result.code === 200 && result.data.uid) {
+                    return AuthHelper.syncUserSession(result.data.uid, req, res).then(() => {
+                        return refer;
+                    });
+                }
+            })
+            .then((redirectTo) => {
+                return res.redirect(redirectTo);
+            });
     } else {
         return Promise.resolve(res.redirect(loginPage));
     }