void DrawShapes( Camera cam ) creates small GC allocation every frame

Hello,

I have a script that inherits from ImmediateModeShapeDrawer. Even with this function that does nothing, I have a 232B GC alloc every frame, would any one know why, and how I can fix it?

public override void DrawShapes( Camera cam ){
using( Draw.Command( cam, renderPass ) )
      {
return;
}

Thanks!