Fix NPE when stopping off-screen times-up timers

                break;

            case TimerObj.STATE_TIMESUP:

                t.mState = TimerObj.STATE_DONE;

                // Used in a context where the timer could be off-screen and without a view

                if (t.mView != null) {

                    ((TimerListItem) t.mView).done();

                }

                updateTimersState(t, Timers.TIMER_DONE);

                cancelTimerNotification(t.mTimerId);

                updateTimesUpMode(t);