message: Enabling build of stitching when CUDA is available
  Without proposed change, module throws build error regarding missing `opencv2/cudaimgproc.hpp`
diff: @@ -9,5 +9,5 @@ if(BUILD_SHARED_LIBS AND BUILD_opencv_world AND OPENCV_WORLD_EXCLUDE_EXTRA_MODUL
  set(STITCHING_CONTRIB_DEPS "")
  endif()
  ocv_define_module(stitching opencv_imgproc opencv_features2d opencv_calib3d opencv_flann
  - OPTIONAL opencv_cudaarithm opencv_cudawarping opencv_cudafeatures2d opencv_cudalegacy ${STITCHING_CONTRIB_DEPS}
  + OPTIONAL opencv_cudaarithm opencv_cudawarping opencv_cudafeatures2d opencv_cudalegacy opencv_cudaimgproc ${STITCHING_CONTRIB_DEPS}
  WRAP python)
  