QPID: Undoing recent pn_message change
QPID: Undoing recent pn_message change

Looks like it caused a core in one of the other unit tests.

Signed-off-by: Frank Quinn <8e90d92b6718ce33106d66386b493961926d3d82@gmail.com>

philippreston/OpenMAMA,dpauls/OpenMAMA,philippreston/OpenMAMA,fquinner/OpenMAMA,dpauls/OpenMAMA,fquinner/OpenMAMA,fquinner/OpenMAMA,philippreston/OpenMAMA,fquinner/OpenMAMA,dpauls/OpenMAMA,fquinner/OpenMAMA,dpauls/OpenMAMA,philippreston/OpenMAMA,dpauls/OpenMAMA,philippreston/OpenMAMA,dpauls/OpenMAMA,philippreston/OpenMAMA,fquinner/OpenMAMA,fquinner/OpenMAMA,philippreston/OpenMAMA,dpauls/OpenMAMA