shithub: mq

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fix log trimming

--- a/mq.c

+++ b/mq.c

@@ -113,18 +113,17 @@

 void

 trimlog(Mq *q)

 {

-	Msg *m, *n;

+	Msg *m;

 	if(maxlog < 0)

 		return;

-	n = nil;

-	for(m = q->loghd; m != nil && q->logsz >= maxlog; m = n){

-		n = m->next;

+	while(q->loghd != nil && q->logsz >= maxlog){

+		m = q->loghd;

+		q->loghd = m->next;

 		q->logsz -= m->count;

 		msgunref(m);

 	}

-	q->loghd = n;

-	if(m == nil)

+	if(q->loghd == nil)

 		q->logtl = nil;

 }