alarm: skip timed out alarms when inserting in procalarm() (thanks erik)

from erik quanstros 9fans post:

i think the list insertion code needs a single-read
test that f->alarm != 0. to prevent the 0 from
acting like a fencepost.  e.g. trying to insert -10 into
list -40 -30 0 -20.

	if(alarms.head) {
		l = &alarms.head;
		for(f = *l; f; f = f->palarm) {
>>			fw = f->alarm;
>>			if(fw != 0 && (long)(fw - when) >= 0) {
				up->palarm = f;
				*l = up;
				goto done;
			}
			l = &f->palarm;
		}
		*l = up;
	}

0 files changed, 0 insertions, 0 deletions