Reduce quadruple negation to double negation;

from Edgar Pettijohn <edgar at pettijohn minus web dot com>.
OK jmc@ deraadt@

While here, remove two instances of inconsistent future tense.

1 files changed, 10 insertions, 10 deletions

diff --git a/lib/libc/gen/daemon.3 b/lib/libc/gen/daemon.3
index f221c0ede22..4bcb462704e 100644
--- a/lib/libc/gen/daemon.3
+++ b/lib/libc/gen/daemon.3
@@ -1,4 +1,4 @@
-.\"	$OpenBSD: daemon.3,v 1.12 2013/06/05 03:39:22 tedu Exp $
+.\"	$OpenBSD: daemon.3,v 1.13 2016/05/18 11:41:16 schwarze Exp $
 .\"
 .\" Copyright (c) 1993
 .\"	The Regents of the University of California.  All rights reserved.
@@ -27,7 +27,7 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.Dd $Mdocdate: June 5 2013 $
+.Dd $Mdocdate: May 18 2016 $
 .Dt DAEMON 3
 .Os
 .Sh NAME
@@ -43,18 +43,18 @@ The
 function is for programs wishing to detach themselves from the
 controlling terminal and run in the background as system daemons.
 .Pp
-Unless the argument
+If the argument
 .Fa nochdir
-is non-zero,
+is zero,
 .Fn daemon
 changes the current working directory to the root
 .Pq Pa / .
 .Pp
-Unless the argument
+If the argument
 .Fa noclose
-is non-zero,
+is zero,
 .Fn daemon
-will redirect standard input, standard output and standard error to
+redirects standard input, standard output and standard error to
 .Pa /dev/null .
 .Sh RETURN VALUES
 Upon success,
@@ -78,11 +78,11 @@ The
 function first appeared in
 .Bx 4.4 .
 .Sh CAVEATS
-Unless the
+If the
 .Ar noclose
-argument is non-zero,
+argument is zero,
 .Fn daemon
-will close the first three file descriptors and redirect them to
+closes the first three file descriptors and redirects them to
 .Pa /dev/null .
 Normally, these correspond to standard input, standard output and
 standard error.