fix: downloadFile 在 windows 中偶现文件被锁定 (#211)

Author: livehigh

package.json

@@ -1,6 +1,6 @@
 {
   "name": "cos-nodejs-sdk-v5",
-  "version": "2.14.1",
+  "version": "2.14.2",
   "description": "cos nodejs sdk v5",
   "main": "index.js",
   "types": "index.d.ts",

sdk/advance.js

@@ -1597,6 +1597,9 @@ function downloadFile(params, callback) {
                 Output: writeStream,
               },
               function (err, data) {
+                if (err && writeStream.writableFinished === false) {
+                  writeStream.close && writeStream.close();
+                }
                 if (aborted) return;
 
                 // 处理错误和进度