[src/trunk]: src/sys/dev Fix a build error. Found by joerg@

[nat <nat%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/9c0e416fbcf4
branches:  trunk
changeset: 349359:9c0e416fbcf4
user:      nat <nat%NetBSD.org@localhost>
date:      Thu Dec 08 20:33:52 2016 +0000

description:
Fix a build error.  Found by joerg@

diffstat:

 sys/dev/audio.c |  6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diffs (27 lines):

diff -r 79206f1c363f -r 9c0e416fbcf4 sys/dev/audio.c
--- a/sys/dev/audio.c   Thu Dec 08 19:35:10 2016 +0000
+++ b/sys/dev/audio.c   Thu Dec 08 20:33:52 2016 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: audio.c,v 1.269 2016/12/08 10:28:44 nat Exp $  */
+/*     $NetBSD: audio.c,v 1.270 2016/12/08 20:33:52 nat Exp $  */
 
 /*-
  * Copyright (c) 2016 Nathanial Sloss <nathanialsloss%yahoo.com.au@localhost>
@@ -148,7 +148,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: audio.c,v 1.269 2016/12/08 10:28:44 nat Exp $");
+__KERNEL_RCSID(0, "$NetBSD: audio.c,v 1.270 2016/12/08 20:33:52 nat Exp $");
 
 #include "audio.h"
 #if NAUDIO > 0
@@ -3580,7 +3580,7 @@
                        continue;
                i--;
                vc = sc->sc_vchan[n];
-               if (!vc->sc_open & AUOPEN_READ)
+               if (!(vc->sc_open & AUOPEN_READ))
                        continue;
                if (!vc->sc_rbus)
                        continue;