hub.c: Properly send $MyINFO on reconnect
hub.c: Properly send $MyINFO on reconnect

Ncdc will never send the same $MyINFO twice, but that should only apply
to a single connection. Resetting hub->nfo_h_* to 0 on disconnect fixes
this, as they can never actually be 0 while connected.

Tilka/ncdc,srijan/ncdc,srijan/ncdc,srijan/ncdc,Tilka/ncdc