Resolve memory leak.

radixgeometry/geometryfactory.cc

@@ -26,6 +26,7 @@ Plane *GeometryFactory::createPlane(GeometryPool &pool, const Real a,
 
   return plane;
 }
+
 Cuboid *GeometryFactory::createCuboid(GeometryPool &pool, const Real x0,
                                       const Real x1, const Real y0,
                                       const Real y1, const Real z0,
@@ -188,8 +189,10 @@ Union *GeometryFactory::createUnion(GeometryPool &pool, GeometryObject *left,
   }
 
   Union *theUnion = createUnion(pool, left, allOnTheRight);
+  delete allOnTheRight;
   return theUnion;
 }
+
 Instance *GeometryFactory::createInstance(GeometryPool &pool,
                                           GeometryObject *object,
                                           Instance *parent)