dont use DecodeMulti

[jmcmenamy]

Hello! I noticed that when logToTerminal is true, EOF errors are printed due to line 578. For example, with go test -v, output includes

=== RUN   TestSendAndUnpackInt
[GoVector]:govec.go:328: TestLogFile-Log.txt exists! ... Deleting 
[GoVector]:govec.go:578: EOF

Printing each field of e when this occurs, the output shows that e.Pid is not set. This is due to dec.DecodeMulti being called after the VClockPayload has already been decoded. This leaves no data for the subsequent decode into d.Pid, hence the EOF.

If desired, I can also add/modify a test like this in govec_test.go:

logToTerminal = true
var buf bytes.Buffer
logger := log.New(&buf, "", 0)
gv.logger = logger
gv.UnpackReceive("TestMessage", packed, &response, opts)
AssertEquals(t, false, strings.Contains(buf.String(), "EOF"), "Error when decoding")