title: UIWebView on iOS 6 does not display images with relative URLs in webarchives
body: <p>We are using webarchives in our apps sometimes as it is very convenient way to store HTML + all associated images/CSS/scripts/etc inside a single file on the desktop, put it into the project, and then load it into a UIWebView with a single call like that:</p>
  
  <pre><code>NSData *webArchiveData = /* ... Load data from a single file ... */ ;
  [webView
      loadData:webArchiveData
      MIMEType:@"application/x-webarchive"
      textEncodingName:@"utf-8"
      baseURL:nil
  ];
  </code></pre>
  
  <p>This stopped working on iOS 6 however: the HTML is loaded, but images referenced via relative URLs are not displayed anymore.</p>