In some cases an NNTP server will issue a 400 error (service disconnected), when we emit a BODY, GROUP, or HELP command. This was being handled in BODY,  but not in GROUP or HELP. I've thus added support to handle it in these other two commands. This will alleviate cases where the connection is not lost, by the Factory, by dropping them immediately.
In some cases an NNTP server will issue a 400 error (service disconnected),
when we emit a BODY, GROUP, or HELP command. This was being handled in BODY, 
but not in GROUP or HELP. I've thus added support to handle it in these other
two commands. This will alleviate cases where the connection is not lost, by
the Factory, by dropping them immediately.



emikulic/hellanzb,pjenvey/hellanzb,pjenvey/hellanzb,emikulic/hellanzb