DDMsgReader - Inactivity timer does not seem to work when reading messages

A user has logged into my BBS, read a message in DDMR and then the session has hung. Over an hour later session is still active.

I used umonitor to spy on user's session, selected [Q]uit, user back to main menu, then after a few minutes sbbs booted the user off due to inactivity.

DDMR should also boot users off due to inactivity.