code: plan9front

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devstream: fix mistake

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

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

@@ -425,7 +425,7 @@

 		qunlock(&s->wql);

 		nexterror();

 	}

-	while(!streamdrained(s))

+	while(!isdrained(s))

 		sleep(&s->wz, isdrained, s);

 	qunlock(&s->wql);

 	poperror();