Description of problem:
The following traceback is thrown when program reaches Connection::close() method.  This happens only through the JMS API.

----------------------------------------------------------------------------
Exception in thread "IoReceiver - localhost/127.0.0.1:5672" java.lang.NullPointerException
        at org.apache.qpid.client.AMQConnectionDelegate_0_10.closed(AMQConnectionDelegate_0_10.java:209)
        at org.apache.qpid.transport.Connection.closed(Connection.java:428)
        at org.apache.qpid.transport.network.Assembler.closed(Assembler.java:113)
        at org.apache.qpid.transport.network.InputHandler.closed(InputHandler.java:201)
        at org.apache.qpid.transport.network.io.IoReceiver.run(IoReceiver.java:132)

----------------------------------------------------------------------------

How reproducible:
Always

Steps to Reproduce:
1. Install MRG-1.1 RC packages and Sun JDK 1.5.0
2. Start Qpid broker
3. Grab a copy of the qpid_i18n_multibyte_tests from cvs:tests/distribution/MRG_Messaging/
4. Compile and run the utf8test.java program found in the java directory

      java -cp $CLASSPATH utf8test localhost 5672 ../testdata/plain_ en
  
Actual results:
During the JMS tests, you will get 2 exceptions as shown above.

Expected results:
No exceptions at all.

Additional info:
Seems to have been introduced after Qpid SVN r707694 (2008-10-24 19:41:58 +0200 (Fri, 24 Oct 2008)) and up to the packaging of MRG-1.1 Java packages

Package failing: 

Name        : qpid-java-client             Relocations: (not relocatable)
Version     : 0.3.709187                        Vendor: Red Hat, Inc.
Release     : 1.el5                         Build Date: Fri 31 Oct 2008 11:28:35 AM EDT
Install Date: Mon 03 Nov 2008 03:03:23 PM EST      Build Host: hs20-bc1-7.build.redhat.com
Group       : Development/Java              Source RPM: qpid-java-0.3.709187-1.el5.src.rpm

Name        : qpid-java-common             Relocations: (not relocatable)
Version     : 0.3.709187                        Vendor: Red Hat, Inc.
Release     : 1.el5                         Build Date: Fri 31 Oct 2008 11:28:35 AM EDT
Install Date: Mon 03 Nov 2008 03:03:17 PM EST      Build Host: hs20-bc1-7.build.redhat.com
Group       : Development/Java              Source RPM: qpid-java-0.3.709187-1.el5.src.rpm
Size        : 3585098                          License: Apache Software License