fix: 修复链接参数serveinfo不存在时会报错的问题

sample-form-client-ui/admin/src/App.vue

@@ -120,6 +120,7 @@ export default {
         this.devicenum = devicenum;
         this.SET_deviceCode(devicenum);
         local.setLocal("devicenum", devicenum);
+        if (!routeQuery["serveinfo"]) return;
         // window软件测试
         let serveinfo = JSON.parse(decodeURIComponent(routeQuery["serveinfo"]));
         if (JSON.stringify(serveinfo) !== "{}") {