fixed memory leaks in ForkLiftDemo/VehicleDemo

Thanks to mi076 for report+fix: http://bulletphysics.com/Bullet/phpBB3/viewtopic.php?f=9&t=2652
Minor syntax error fix in a Jamfile

Demos/VehicleDemo/VehicleDemo.cpp

@@ -94,6 +94,7 @@ m_indexVertexArrays(0),
 m_vertices(0)
 {
 	m_vehicle = 0;
+	m_wheelShape = 0;
 	m_cameraPosition = btVector3(30,30,30);
 }
 
@@ -132,6 +133,8 @@ VehicleDemo::~VehicleDemo()
 
 	delete m_vehicle;
 
+	delete m_wheelShape;
+
 	//delete solver
 	delete m_constraintSolver;
 
@@ -324,6 +327,7 @@ const float TRIANGLE_SIZE=20.f;
 	m_carChassis = localCreateRigidBody(800,tr,compound);//chassisShape);
 	//m_carChassis->setDamping(0.2,0.2);
 	
+	m_wheelShape = new btCylinderShapeX(btVector3(wheelWidth,wheelRadius,wheelRadius));
 	
 	clientResetScene();
 
@@ -400,7 +404,7 @@ void VehicleDemo::renderme()
 	btScalar m[16];
 	int i;
 
-	btCylinderShapeX wheelShape(btVector3(wheelWidth,wheelRadius,wheelRadius));
+
 	btVector3 wheelColor(1,0,0);
 
 	btVector3	worldBoundsMin,worldBoundsMax;
@@ -414,7 +418,7 @@ void VehicleDemo::renderme()
 		m_vehicle->updateWheelTransform(i,true);
 		//draw wheels (cylinders)
 		m_vehicle->getWheelInfo(i).m_worldTransform.getOpenGLMatrix(m);
-		m_shapeDrawer->drawOpenGL(m,&wheelShape,wheelColor,getDebugMode(),worldBoundsMin,worldBoundsMax);
+		m_shapeDrawer->drawOpenGL(m,m_wheelShape,wheelColor,getDebugMode(),worldBoundsMin,worldBoundsMax);
 	}