message: fixed memory leak in World, closes
diff: @@ -30,6 +30,7 @@ static void addGeometryInstance(
  rtcSetGeometryTransform(eInst, 0, RTC_FORMAT_FLOAT3X4_COLUMN_MAJOR, &xfm);
  rtcCommitGeometry(eInst);
  rtcAttachGeometry(scene, eInst);
  + rtcReleaseGeometry(eInst);
  }
  static void freeAndNullifyEmbreeScene(RTCScene &scene)
  