Creates duplicate entries in podcast.xml

[mholtby1085]

Using the AWS Blog RSS feed as the example you end up with duplicate entries in podcast.xml:

<item>
  <title>Now Available – Amazon Aurora with PostgreSQL Compatibility</title>
  <guid isPermaLink="false">573c2ac64deda7f0ba7233ec14303453d70d97c8_0</guid>
  <enclosure url="https://s3.amazonaws.com/******/573c2ac64deda7f0ba7233ec14303453d70d97c8_0.mp3" length="0" type="audio/mpeg"/>
  <pubDate>Wed, 25 Oct 2017 00:12:18 +0000</pubDate>
</item>
<item>
  <title>Now Available – Amazon Aurora with PostgreSQL Compatibility</title>
  <guid isPermaLink="false">573c2ac64deda7f0ba7233ec14303453d70d97c8_1</guid>
  <enclosure url="https://s3.amazonaws.com/******/573c2ac64deda7f0ba7233ec14303453d70d97c8_1.mp3" length="0" type="audio/mpeg"/>
  <pubDate>Wed, 25 Oct 2017 00:12:17 +0000</pubDate>
</item>
<item>
  <title>Now Available – Amazon Aurora with PostgreSQL Compatibility</title>
  <guid isPermaLink="false">573c2ac64deda7f0ba7233ec14303453d70d97c8_2</guid>
  <enclosure url="https://s3.amazonaws.com/******/573c2ac64deda7f0ba7233ec14303453d70d97c8_2.mp3" length="0" type="audio/mpeg"/>
  <pubDate>Wed, 25 Oct 2017 00:12:16 +0000</pubDate>
</item>
<item>
  <title>Now Available – Amazon Aurora with PostgreSQL Compatibility</title>
  <guid isPermaLink="false">573c2ac64deda7f0ba7233ec14303453d70d97c8_3</guid>
  <enclosure url="https://s3.amazonaws.com/******/573c2ac64deda7f0ba7233ec14303453d70d97c8_3.mp3" length="0" type="audio/mpeg"/>
  <pubDate>Wed, 25 Oct 2017 00:12:15 +0000</pubDate>
</item>