RFR: 8156484: ZipFile retains too much native memory from caching Inflaters

[Martin Buchholz]

Hi Peter,

I would make e.g. the change to Resource an independent change.

Below you declare that you throw IOException, but you actually swallow
it, which is not good.

     /**
+     * Closes cached input stream used for getBytes / getByteBuffer
+     * @throws IOException
+     */
+    @Override
+    public synchronized void close() {