Fix to standalone message queue.
Fix to standalone message queue.

Althiena/PolyEngine,PiotrMoscicki/PolyEngine,MuniuDev/PolyEngine,PiotrMoscicki/PolyEngine,MuniuDev/PolyEngine,Althiena/PolyEngine,KNTGPolygon/PolyEngine,MuniuDev/PolyEngine,KNTGPolygon/PolyEngine,Althiena/PolyEngine