Remove disallowed XML characters in RSS feeds

Author: ldeso

layouts/_default/rss.xml

@@ -24,7 +24,7 @@
       <pubDate>{{ .PublishDate.Format "Mon, 02 Jan 2006 15:04:05 -0700" | safeHTML }}</pubDate>{{ with site.Params.author.email }}
       <author>{{ . }}{{ with site.Params.author.name }} ({{ . }}){{ end }}</author>{{ end }}
       <guid>{{ .Permalink }}</guid>
-      <description>{{ html .Content }}</description>
+      <description>{{ transform.XMLEscape .Content | safeHTML }}</description>
     </item>{{ end }}
   </channel>
 </rss>