zap last remains of malloc.conf; prompted by and ok jmc@

src/lib/libc/stdlib/malloc.3

@@ -30,9 +30,9 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.\"	$OpenBSD: malloc.3,v 1.117 2018/11/06 12:02:30 otto Exp $
+.\"	$OpenBSD: malloc.3,v 1.118 2018/11/08 05:58:21 otto Exp $
 .\"
-.Dd $Mdocdate: November 6 2018 $
+.Dd $Mdocdate: November 8 2018 $
 .Dt MALLOC 3
 .Os
 .Sh NAME
@@ -401,7 +401,7 @@ it guarantees memory is cleared before placing it on the internal free list.
 Deallocation of such an object should be done by calling
 .Fn freezero .
 .Sh ENVIRONMENT
-.Bl -tag -width "/etc/malloc.conf"
+.Bl -tag -width "MALLOC_OPTIONS"
 .It Ev MALLOC_OPTIONS
 String of flags documented in
 .Xr malloc.conf 5 .
@@ -554,9 +554,9 @@ in this case.
 .Pp
 The
 .Ev MALLOC_OPTIONS
-environment variable, the file
-.Pa /etc/malloc.conf ,
-and the
+environment variable, the
+.Va vm.malloc_conf
+sysctl and the
 .Sx DIAGNOSTICS
 output are extensions to the standard.
 .Sh HISTORY