openntpd: exec `openntpd` in runit script; fix xlint

srcpkgs/openntpd/files/openntpd/run

@@ -1,3 +1,3 @@
 #!/bin/sh
 [ -r conf ] && . ./conf
-exec ntpd -d ${OPTS:=-s} 2>&1
+exec openntpd -d ${OPTS:=-s} 2>&1

srcpkgs/openntpd/template

@@ -1,7 +1,7 @@
 # Template file for 'openntpd'
 pkgname=openntpd
 version=6.2p3
-revision=6
+revision=7
 build_style=gnu-configure
 configure_args="--with-privsep-user=${pkgname} --with-cacert=/etc/ssl/certs.pem"
 hostmakedepends="automake libtool"
@@ -9,7 +9,7 @@ makedepends="libressl-devel"
 depends="ca-certificates"
 short_desc="FREE, easy to use implementation of the Network Time Protocol"
 maintainer="Orphaned <orphan@voidlinux.org>"
-license="BSD"
+license="ISC"
 homepage="http://openntpd.org/"
 distfiles="http://ftp.openbsd.org/pub/OpenBSD/OpenNTPD/${pkgname}-${version}.tar.gz"
 checksum=7b02691524197e01ba6b1b4b7595b33956e657ba6d5c4cf2fc20ea3f4914c13a