message: Fix for crash with MSVC 12 2013
diff: @@ -31,6 +31,11 @@ namespace ospray {
  {
  properties.name = "NULL";
  properties.type = "Node";
  + // MSVC 2013 is buggy and ignores {}-initialization of anonymous structs
  +#if _MSC_VER <= 1800
  + properties.parent = nullptr;
  + properties.valid = false;
  +#endif
  markAsModified();
  }
  