Move the nokogiri loading to a method.

getazure.rb

@@ -4,10 +4,13 @@ require 'nokogiri'
 require 'fileutils'
 
 FileUtils.mkdir_p 'downloads/'
-xml = Nokogiri::XML(open('http://s.ch9.ms/Shows/Azure-Friday/feed/mp4high'))
-item = xml.xpath('//item')
 
-item.each do |s|
+def podcasts
+  feed = 'http://s.ch9.ms/Shows/Azure-Friday/feed/mp4high'
+  Nokogiri::XML(open(feed)).xpath('//item')
+end
+
+podcasts.each do |s|
   source      = s.at('enclosure')['url'].to_s
   name        = source.split('/').last
   local_file  = "downloads/#{name}"