- Add defer logfile.Close() to prevent file descriptor leak
- Fix typo 'Incomming' -> 'Incoming' in log message
- Change JSON tag 'Misc' to 'misc' for consistency with sMsg
- Change Fwdcnt type from int64 to *int64 in rMsg struct
- Use pointer to properly distinguish between 'not provided' (nil) and explicit 0
- Update all Fwdcnt usages to dereference pointer