fixup! fixup! X on msgpack support

go/neo/neonet/newlink.go

@@ -269,14 +269,14 @@ func rxHello(errctx string, rx *xbufReader) (enc proto.Encoding, version uint32,
 		peerEnc = 'N'
 		peerVer = uint32(b[3])
 
-	case bytes.Equal(b, []byte{0x92, 0xc4, 3, 'N'}): // start of "fixarray<2> bin8 'N | EO' ...
+	case bytes.Equal(b, []byte{0x92, 0xa3, 'N', 'E'}): // start of "fixarray<2> bin8 'NE | O' ...
 		b = append(b, []byte{0,0}...)
 		_, err = io.ReadFull(rx, b[4:])
 		err = xio.NoEOF(err)
 		if err != nil {
 			return 0, 0, err
 		}
-		if !bytes.Equal(b[4:], []byte{'E','O'}) {
+		if !bytes.Equal(b[4:], []byte{'O', 0}) {
 			badMagic = true
 			break
 		}