Empty xmlns on Atom syndication feed sample

[hectorcorrea]

Running the code to build an Atom syndication feed gives the correct XML but the xmlns attribute is inserted with an empty value to all children of the feed element:

<?xml version="1.0" encoding="utf-8"?>
<feed xmlns="http://www.w3.org/2005/Atom">
  <title xmlns="">My Blog!</title>
  <subtitle xmlns="">Others have blogs too, but this one is mine</subtitle>
  <link href="http://example.org" xmlns="" />
  <link href="http://example.org/feed.xml" rel="self" xmlns="" />
  <author xmlns="">
    <name>John Doe</name>
    <email>johndoe@example.org</email>
  </author>
</feed>