Pull in <string.h> if !_KERNEL, otherwise gcc4 complains about no

prototype for memset(3) (in AUDIO_INITINFO()).

sys/sys/audioio.h

@@ -1,4 +1,4 @@
-/*	$NetBSD: audioio.h,v 1.30 2006/03/28 21:12:04 kleink Exp $	*/
+/*	$NetBSD: audioio.h,v 1.31 2006/06/18 20:45:09 scw Exp $	*/
 
 /*
  * Copyright (c) 1991-1993 Regents of the University of California.
@@ -40,6 +40,10 @@
 #include <sys/types.h>
 #include <sys/ioccom.h>
 
+#ifndef _KERNEL
+#include <string.h>	/* Required for memset(3) prototype (AUDIO_INITINFO) */
+#endif /* _KERNEL */
+
 /*
  * Audio device
  */