timeslot FSM: fix infinite recursion on failure to send PDCH ACT

If PDCH ACT sending fails and we go back to UNUSED, the UNUSED onenter goes
right back to PDCH ACT and we loop. Avoid by going straight to broken state.

Actually, if we can't send messages, the timeslot is obviously broken, so also
enter the broken state if PDCH deactivation fails to be sent out.

Change-Id: Iebaffd0547a9651c5ba435b54dedab99c2cfdd31
1 file changed