Why does PicketLink generate SAML LogoutRequest messages that do not contain a Destination attribute?

Issue

Why does PicketLink generate SAML LogoutRequest messages that do not contain a Destination attribute?

There is an issue with the logout. In the saml logout request the destination is missing, as you can see below:

<samlp:LogoutRequest xmlns:samlp="urn:oasis:names:tc:SAML:2.0:protocol"
                     xmlns="urn:oasis:names:tc:SAML:2.0:assertion"
                     ID="ID_5af627ee-0660-44ba-9633-ff2e5b64f28f"
                     IssueInstant="2013-04-29T12:04:05.229Z"
                     Version="2.0"
                     >

The correct one should be like this:

<samlp:LogoutRequest xmlns:samlp="urn:oasis:names:tc:SAML:2.0:protocol"
                     xmlns="urn:oasis:names:tc:SAML:2.0:assertion"
                     ID="ID_5af627ee-0660-44ba-9633-ff2e5b64f28f"
                     Destination="https://n0.corp.net/nidp/saml2/sso"
                     IssueInstant="2013-04-29T12:04:05.229Z"
                     Version="2.0"
                     >