message: fix handling of affinity param, don't implicitly take auto as true
diff: @@ -127,7 +127,8 @@ void Device::commit()
  if (OSPRAY_SET_AFFINITY)
  threadAffinity = OSPRAY_SET_AFFINITY.value();
  - threadAffinity = getParam<bool>("setAffinity", threadAffinity);
  + if (hasParam("setAffinity"))
  + threadAffinity = getParam<bool>("setAffinity", threadAffinity != 0);
  tasking::initTaskingSystem(numThreads);
  