message: save allocation of memory for fake image
diff: @@ -286,7 +286,8 @@ public:
  CV_Assert(imInfo.total() >= 2);
  // We've chosen the smallest data type because we need just a shape from it.
  - fakeImageBlob.create(shape(1, 1, imInfo.at<float>(0), imInfo.at<float>(1)), CV_8UC1);
  + // We don't allocate memory but just need the shape is correct.
  + Mat fakeImageBlob(shape(1, 1, imInfo.at<float>(0), imInfo.at<float>(1)), CV_8UC1, nullptr);
  // Generate prior boxes.
  std::vector<Mat> layerInputs(2), layerOutputs(1, priorBoxes);
  @@ -427,7 +428,6 @@ private:
  Ptr<PermuteLayer> deltasPermute;
  Ptr<PermuteLayer> scoresPermute;
  uint32_t keepTopBeforeNMS, keepTopAfterNMS, featStride, baseSize;
  - Mat fakeImageBlob;
  float nmsThreshold;
  DictValue ratios, scales;
  #ifdef HAVE_OPENCL
  