Use memset instead of bzero for better portability.

ok gilles claudio doug

src/lib/libutil/imsg-buffer.c

@@ -1,4 +1,4 @@
-/*	$OpenBSD: imsg-buffer.c,v 1.6 2015/07/03 14:50:14 brynet Exp $	*/
+/*	$OpenBSD: imsg-buffer.c,v 1.7 2015/07/12 18:40:49 nicm Exp $	*/
 
 /*
  * Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org>
@@ -149,7 +149,7 @@ ibuf_write(struct msgbuf *msgbuf)
 	unsigned int	 i = 0;
 	ssize_t	n;
 
-	bzero(&iov, sizeof(iov));
+	memset(&iov, 0, sizeof(iov));
 	TAILQ_FOREACH(buf, &msgbuf->bufs, entry) {
 		if (i >= IOV_MAX)
 			break;
@@ -233,9 +233,9 @@ msgbuf_write(struct msgbuf *msgbuf)
 		char		buf[CMSG_SPACE(sizeof(int))];
 	} cmsgbuf;
 
-	bzero(&iov, sizeof(iov));
-	bzero(&msg, sizeof(msg));
-	bzero(&cmsgbuf, sizeof(cmsgbuf));
+	memset(&iov, 0, sizeof(iov));
+	memset(&msg, 0, sizeof(msg));
+	memset(&cmsgbuf, 0, sizeof(cmsgbuf));
 	TAILQ_FOREACH(buf, &msgbuf->bufs, entry) {
 		if (i >= IOV_MAX)
 			break;

src/lib/libutil/imsg.c

@@ -1,4 +1,4 @@
-/*	$OpenBSD: imsg.c,v 1.8 2015/07/03 14:50:14 brynet Exp $	*/
+/*	$OpenBSD: imsg.c,v 1.9 2015/07/12 18:40:49 nicm Exp $	*/
 
 /*
  * Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org>
@@ -36,7 +36,7 @@ void
 imsg_init(struct imsgbuf *ibuf, int fd)
 {
 	msgbuf_init(&ibuf->w);
-	bzero(&ibuf->r, sizeof(ibuf->r));
+	memset(&ibuf->r, 0, sizeof(ibuf->r));
 	ibuf->fd = fd;
 	ibuf->w.fd = fd;
 	ibuf->pid = getpid();
@@ -57,8 +57,8 @@ imsg_read(struct imsgbuf *ibuf)
 	int			 fd;
 	struct imsg_fd		*ifd;
 
-	bzero(&msg, sizeof(msg));
-	bzero(&cmsgbuf, sizeof(cmsgbuf));
+	memset(&msg, 0, sizeof(msg));
+	memset(&cmsgbuf, 0, sizeof(cmsgbuf));
 
 	iov.iov_base = ibuf->r.buf + ibuf->r.wpos;
 	iov.iov_len = sizeof(ibuf->r.buf) - ibuf->r.wpos;
@@ -78,7 +78,7 @@ again:
 		free(ifd);
 		return (-1);
 	}
-	
+
 	if ((n = recvmsg(ibuf->fd, &msg, 0)) == -1) {
 		if (errno == EMSGSIZE)
 			goto fail;