message: fix bug in sg logic where material lists could be blown over accidently
diff: @@ -47,7 +47,7 @@ namespace ospray {
  void Geometry::postCommit(RenderContext &)
  {
  auto ospGeometry = valueAs<OSPGeometry>();
  - if (hasChild("material")) {
  + if (hasChild("material") && !hasChild("materialList")) {
  ospSetMaterial(ospGeometry, child("material").valueAs<OSPMaterial>());
  }
  ospCommit(ospGeometry);
  