GPU accelerated scale_npp, hw_frames context missing about beamcoder HOT 1 OPEN

     case AVERROR(EINVAL):
         // if hw context is present in frame, copy it to the encoder
         if(c->encoder->hw_frames_ctx == nullptr && (*it)->hw_frames_ctx != nullptr) {
            c->encoder->hw_frames_ctx = av_buffer_ref((*it)->hw_frames_ctx);
        }
       if ((ret = avcodec_open2(c->encoder, c->encoder->codec, nullptr))) {
         c->status = BEAMCODER_ERROR_ALLOC_ENCODER;
         c->errorMsg = avErrorMsg("Problem opening encoder: ", ret);
         return;
       }
       goto bump;