unlisted posts should not show up in RSS either

layouts/_default/rss.xml

@@ -6,9 +6,12 @@
 {{- else -}}
 {{- $pages = $pctx.Pages -}}
 {{- end -}}
+{{- $allposts :=  where .Site.RegularPages "Type" "in" "posts" -}}
+{{- $notunlisted := where site.RegularPages ".Params.unlisted" "!=" "true" -}} 
+{{- $posts := $allposts | intersect $notunlisted -}}
 {{- $limit := .Site.Config.Services.RSS.Limit -}}
 {{- if ge $limit 1 -}}
-{{- $pages = $pages | first $limit -}}
+{{- $pages = $posts | first $limit -}}
 {{- end -}}
 {{- printf "<?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"yes\"?>" | safeHTML }}
 <rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom">
@@ -40,7 +43,6 @@
       <pubDate>{{ .Date.Format "Mon, 02 Jan 2006 15:04:05 -0700" | safeHTML }}</pubDate>
       {{ with .Site.Author.email }}<author>{{.}}{{ with $.Site.Author.name }} ({{.}}){{end}}</author>{{end}}
       <guid>{{ .Permalink }}</guid>
-      
       <description>{{  .Content | html }}</description>
     </item>
     {{ end }}