PDF module doesn't work when streaming via HTTP

The following query:

import module namespace read-pdf = "http://www.zorba-xquery.com/modules/read-pdf";
import module namespace fetch = "http://www.zorba-xquery.com/modules/fetch";
declare namespace rpo = "http://www.zorba-xquery.com/modules/read-pdf/read-pdf-options";

let $pdf := fetch:content-binary("http://plugindoc.mozdev.org/testpages/test.pdf")
return
read-pdf:extract-text($pdf, ())

produces the following output:

Oct 23, 2012 5:24:30 PM org.apache.pdfbox.pdfparser.XrefTrailerResolver setStartxref
WARNING: Did not found XRef object at specified startxref position 6577
Oct 23, 2012 5:24:30 PM org.apache.pdfbox.filter.FlateFilter decode
SEVERE: Stop reading corrupt stream
Oct 23, 2012 5:24:30 PM org.apache.pdfbox.filter.FlateFilter decode
SEVERE: Stop reading corrupt stream
<?xml version="1.0" encoding="UTF-8"?>
&lt;!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd"&gt;
&lt;html&gt;&lt;head&gt;&lt;title&gt;&lt;/title&gt;
&lt;meta http-equiv="Content-Type" content="text/html; charset=UTF-8"&gt;
&lt;/head&gt;
&lt;body&gt;
&lt;div&gt;
&lt;/div&gt;&lt;/body&gt;&lt;/html&gt;

However, if you download the file test.pdf to your current working directory and change the query to fetch:content-binary("./test.pdf"), you get:

<?xml version="1.0" encoding="UTF-8"?>
&lt;!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd"&gt;
&lt;html&gt;&lt;head&gt;&lt;title&gt;&lt;/title&gt;
&lt;meta http-equiv="Content-Type" content="text/html; charset=UTF-8"&gt;
&lt;/head&gt;
&lt;body&gt;
&lt;div&gt;&lt;p&gt;Your PDF viewing software works!&lt;/p&gt;

&lt;/div&gt;&lt;/body&gt;&lt;/html&gt;

ie, no error output, and the string content of the PDF is displayed.

This not working (as well as bug 1070611) prevents the PDF module from functioning on try-zorba.