Refactor source.

getazure.rb

@@ -9,9 +9,10 @@ xml = Nokogiri::XML(open('http://s.ch9.ms/Shows/Azure-Friday/feed/mp4high'))
 item = xml.xpath('//item')
 
 item.each do |s|
-  next if File.exist? s.at('enclosure')['url'].to_s.split('/').last
-  File.open("#{s.at('enclosure')['url'].to_s.split('/').last}", "wb") do |file|
-    puts " downloading " + s.at('enclosure')['url'].to_s.split('/').last
-    file.write open("#{s.at('enclosure')['url']}").read
+  source = s.at('enclosure')['url'].to_s
+  next if File.exist? source.split('/').last
+  File.open("#{source.split('/').last}", "wb") do |file|
+    puts " downloading " + source.split('/').last
+    file.write open(source).read
   end
 end