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kernel: make addbroken() static, remove misleading Proc* argument

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

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

@@ -1036,8 +1036,8 @@

 	Proc	*p[NBROKEN];

 }broken;

-void

-addbroken(Proc *p)

+static void

+addbroken(void)

 {

 	qlock(&broken);

 	if(broken.n == NBROKEN) {

@@ -1045,12 +1045,12 @@

 		memmove(&broken.p[0], &broken.p[1], sizeof(Proc*)*(NBROKEN-1));

 		--broken.n;

 	}

-	broken.p[broken.n++] = p;

+	broken.p[broken.n++] = up;

 	qunlock(&broken);

 	edfstop(up);

-	p->state = Broken;

-	p->psstate = nil;

+	up->state = Broken;

+	up->psstate = nil;

 	sched();

 }

@@ -1182,7 +1182,7 @@

 	}

 	if(!freemem)

-		addbroken(up);

+		addbroken();

 	qlock(&up->debug);