QPID: Fixed small leak on shutdown in libevent
QPID: Fixed small leak on shutdown in libevent

Workaround for known memory leak in libevent - see:

http://comments.gmane.org/gmane.comp.lib.libevent.user/752

Would be present in qpid and avis io implementations.

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

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