(e.g. because the console/terminal server was terminated locally), this routine
would attempt to handle any remaining (unhandled) vote mesages and throw-up
checking "conference number" access=0 invalid=invalid errors
because it was trying to process all the (unhandled) sections in the VOTING.DAT
file rather than just the sections beginning with the applicable section
prefixes ("poll:", "vote:" or "close:"). Every other section is actually just a
hex offset into the MESSAGES.DAT file and does not contain the "Conference"
key that qwk_vote() was expecting to find.