fix NettyCodecAdapter decoder memory leak

[JoeCqupt]

What is the purpose of the change

reproduce code

    @Test
    void testDecodeException() throws IOException {
        Codec2 codec2 = Mockito.mock(Codec2.class);
        doThrow(new IOException("testDecodeIllegalPacket")).when(codec2).decode(any(), any());

        URL url = Mockito.mock(URL.class);
        doReturn("default").when(url).getParameter(eq(Constants.CODEC_KEY));

        ChannelHandler handler = Mockito.mock(ChannelHandler.class);
        NettyCodecAdapter nettyCodecAdapter = new NettyCodecAdapter(codec2, url, handler);
        io.netty.channel.ChannelHandler decoder = nettyCodecAdapter.getDecoder();
        EmbeddedChannel embeddedChannel = new EmbeddedChannel();
        embeddedChannel.pipeline().addLast(decoder);

        // simulate illegal data packet
        ByteBuf input = AbstractByteBufAllocator.DEFAULT.buffer();
        input.writeBytes("testDecodeIllegalPacket".getBytes(StandardCharsets.UTF_8));

        DecoderException decoderException = Assertions.assertThrows(DecoderException.class, () -> {
            embeddedChannel.writeInbound(input);
        });
        Assertions.assertTrue( decoderException.getCause() instanceof IOException);

        Assertions.assertEquals(0, input.refCnt());
    }

when NettyCodecAdapter decoder decode exception param ByteBuf not released

expect refcnt 0 , actual 1

Solution
when decode excpetion . skip all readable bytes let ByteToMessageDecoder release ByteBuf

Brief changelog

Verifying this change

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[JoeCqupt]

@AlbumenJ PTAL

[sonarcloud]

Quality Gate passed

Issues
1 New issue
0 Accepted issues

Measures
0 Security Hotspots
100.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[AlbumenJ]

@oxsean PTAL

[oxsean]

LGTM.

[EarthChen]

LGTM