message: cuda: fix build (legacy C-API usage)
diff: @@ -373,7 +373,7 @@ namespace
  // Discard under-size foreground regions:
  d_foreground.download(h_foreground);
  - IplImage ipl_foreground = h_foreground;
  + IplImage ipl_foreground = cvIplImage(h_foreground);
  CvSeq* first_seq = 0;
  cvFindContours(&ipl_foreground, storage, &first_seq, sizeof(CvContour), CV_RETR_LIST);
  