修复代码错误

src/components/PreviewFile/index.js

@@ -1,7 +1,7 @@
 import React from 'react';
 import ReactZmage from 'react-zmage';
 import './index.less';
-ud;
+
 export default function PreviewFile(props) {
   const { src, name, showName } = props;
   var reg = /\.(png|jpg|gif|jpeg|webp)$/;