date is not the current date (thus resetting all daily stats like logons today,
posts today, etc.) - but resetdailyuserdat() failed to save the reset stats
to the user.dat file because user->number was 0 at this point in getuserdat().

This bug (reported by Finnigann) only effected non-BBS servers (like FTP, HTTP,
etc.) since the BBS has its own checking of a new day and resetting of the
daily stats for the user during logon (in logon.cpp).