api/client: close the returned io.ReadCloser

Signed-off-by: Ma Shimiao <mashimiao.fnst@cn.fujitsu.com>
Upstream-commit: 91a496055c3e45ab3fba8e643475adb618581e1f
Component: engine

components/engine/api/client/commit.go

@@ -71,6 +71,8 @@ func (cli *DockerCli) CmdCommit(args ...string) error {
 		return err
 	}
 
+	defer stream.Close()
+
 	if err := json.NewDecoder(stream).Decode(&response); err != nil {
 		return err
 	}