Disable minecraft 1.6.4 VecPool for world, when using Vec3-intensive functions (unnessesary pooling)

// completel untested lolol
// should work

// storing world as a key is alright, as long as the vec pools are disable and enabled correctly
private static final TObjectIntHashMap<World> disabledVecPools = new TObjectIntHashMap<World>(64, 0.75f, -1);

public static void disableVecPool(World world) {
    if (disabledVecPools.containsKey(world)) {
        return;
    }
    disabledVecPools.put(world, world.func_82732_R().field_72346_f);
    world.func_82732_R().field_72346_f = 0;
}
public static void enableVecPool(World world) {
    if (disabledVecPools.containsKey(world)) {
        world.func_82732_R().field_72346_f = disabledVecPools.remove(world);
    }
}