hash key with empty hash as value is parsed wrong

[lbetz]

::icinga2::object::host { 'host1.example.org':
target => '/etc/icinga2/example.d/hosts.conf',
import => [ 'generic-host' ],
address => '127.0.0.1',
vars => {
os => 'Linux',
http_vhosts => {
httpd => {},
},
},
}

=>

This file is managed by Puppet. DO NOT EDIT.

object Host "host1.example.org" {
import "generic-host"

address = "127.0.0.1"
vars.os = "Linux"
vars.http_vhostshttpd = {}
}