git: 9front

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merge

--- a/sys/src/9/port/pgrp.c

+++ b/sys/src/9/port/pgrp.c

@@ -29,7 +29,7 @@

 			continue;

 		if(up != p && p->noteid == noteid && p->kp == 0) {

 			qlock(&p->debug);

-			if(p->pid != 0 && p->noteid == noteid)

+			if(p->noteid == noteid)

 				postnote(p, 0, buf, flag);

 			qunlock(&p->debug);

 		}

--- a/sys/src/9/port/proc.c

+++ b/sys/src/9/port/proc.c

@@ -903,8 +903,17 @@

 	int s, ret;

 	QLock *q;

+	if(p == nil)

+		return 0;

+

 	if(dolock)

 		qlock(&p->debug);

+

+	if(p->pid == 0){

+		if(dolock)

+			qunlock(&p->debug);

+		return 0;

+	}

 	if(n != nil && flag != NUser && (p->notify == 0 || p->notified))

 		p->nnote = 0;

-- 

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