runit-void: only create the current runlevel symlink if it does not exist.

srcpkgs/runit-void/INSTALL

@@ -8,7 +8,9 @@ post)
 	ln -sf /etc/sv/sulogin etc/runit/runsvdir/single
 
 	mkdir -p etc/runit/runsvdir/default
-	ln -sf default etc/runit/runsvdir/current
+	if [ ! -e etc/runit/runsvdir/current ]; then
+		ln -sf default etc/runit/runsvdir/current
+	fi
 	for f in 1 2 3 4 5 6; do
 		[ -e /etc/sv/agetty-tty${f}/down ] || ln -sf /etc/sv/agetty-tty$f etc/runit/runsvdir/default
 	done

srcpkgs/runit-void/template

@@ -1,7 +1,7 @@
 # Template file for 'runit-void'
 pkgname=runit-void
 version=20150407
-revision=2
+revision=3
 wrksrc="void-runit-${version}"
 build_pie=yes
 build_style=gnu-makefile