message: A "= default" move constructor is not supported by older compilers
diff: @@ -152,10 +152,11 @@ namespace ospray {
  struct OSPRAY_SDK_INTERFACE StatusMsgStream
  {
  StatusMsgStream(uint32_t postAtLogLevel = 0);
  + // a "= default" move constructor is not supported by older compilers
  + // however, apparently it just needs to be declared, it won't be called
  + StatusMsgStream(StatusMsgStream &&other);
  ~StatusMsgStream();
  - StatusMsgStream(StatusMsgStream &&other) = default;
  -
  private:
  template <typename T>
  