message: fix gcc bug workaround in the sliding view test
diff: @@ -118,7 +118,8 @@ int main()
  ::models<concepts::RandomAccessRange>(rng);
  auto it = rng.begin();
  CONCEPT_ASSERT(RandomAccessIterator<decltype(it)>());
  -#if defined(__GNUC__) && !defined(__clang__) && __GNUC__ == 6 && __GNUC_MINOR__ < 3
  +#if defined(__GNUC__) && !defined(__clang__) && \
  + ((__GNUC__ == 6 && __GNUC_MINOR__ < 3) || __GNUC__ < 6)
  // Avoid https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78047
  {
  auto deref = *it;
  