Internal Reason must not be null.

[GoogleCodeExporter]

What steps will reproduce the problem?
1. try to get the acl feed of a permanently deleted document

What is the expected output? What do you see instead?
expected: com.google.gdata.util.ResourceNotFoundException thrown
actual: java.lang.NullPointerException thrown

I get this xml:
<errors 
xmlns='http://schemas.google.com/g/2005'><error><domain>GData</domain><code>Reso
urceNotFoundException</code><internalReason/></error></errors>

The internal reason in the response xml: <internalReason/>
This causes that the com.google.gdata.util.ErrorElement.setInternalReason 
method gets a null value which results a null pointer exception in the line 170 
Preconditions.checkNotNull(internalReason, "Internal Reason must not be null.");

What version of the product are you using? On what operating system?
gdata library version 1.47.1

Please provide any additional information below.

Original issue reported on code.google.com by [email protected] on 25 Jan 2013 at 4:46