mfast::encoder may change the pmap and templateid.

[jamesmasika]

{
char * beg = &buff[0];
mfast::message_cref orimsg = decoder.decode(first, last, first_message);
//then i encode the orimsg
//encoder.template_with_id(orimsg .the_id);
beg += encoder.encode(orimsg , beg, end - beg, first_message);
first_message = false;
}
//then i decode the new buff right now
const char *ppmap = &buff[0];
{
const char *f2 = &buff[0];
mfast::message_cref msg = decoder.decode(f2, beg , first_message);
}

//but i printed the pmap and template, it did change the pmap if some optional fields had no values
while (!(*ppmap & 0x80)) {
printf("%02x-", *ppmap);
ppmap++;
}
printf("%02x-", *ppmap);
ppmap++;
////////////////////////////////////////////////////////////
// and i try the release version 1.2.1, it can't decode any message, there was something missing in the <decimal_cref.cpp>