处理返回的 cancel 函数, 避免 context 泄露

不处理 cancel 相关返回函数，会造成 context 一直停留在 background.
the cancel function returned by context.WithTimeout should be called, not discarded, to avoid a context leak

server/utils/upload/minio_oss.go

@@ -67,7 +67,6 @@ func (m *Minio) UploadFile(file *multipart.FileHeader) (filePathres, key string,
 	}
 	f.Close() // 创建文件 defer 关闭
 
-
 	// 对文件名进行加密存储
 	ext := filepath.Ext(file.Filename)
 	filename := utils.MD5V([]byte(strings.TrimSuffix(file.Filename, ext))) + ext
@@ -91,8 +90,10 @@ func (m *Minio) UploadFile(file *multipart.FileHeader) (filePathres, key string,
 }
 
 func (m *Minio) DeleteFile(key string) error {
+	ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
+	defer cancel()
+
 	// Delete the object from MinIO
-	ctx, _ := context.WithTimeout(context.Background(), time.Second*5)
 	err := m.Client.RemoveObject(ctx, m.bucket, key, minio.RemoveObjectOptions{})
 	return err
 }