message: build(icc): fix nodiscard attribute handling
diff: @@ -589,6 +589,8 @@ Cv64suf;
  # elif __cplusplus >= 201703L
  // available when compiler is C++17 compliant
  # define CV_NODISCARD_STD [[nodiscard]]
  +# elif defined(__INTEL_COMPILER)
  + // see above, available when C++17 is enabled
  # elif defined(_MSC_VER) && _MSC_VER >= 1911 && _MSVC_LANG >= 201703L
  // available with VS2017 v15.3+ with /std:c++17 or higher; works on functions and classes
  # define CV_NODISCARD_STD [[nodiscard]]
  