message: fix set but unused variable in test
diff: @@ -209,12 +209,14 @@ void HDF5NativeWriter::CreateAndStoreScalar(std::string const &variableName,
  H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
  ret = H5Dwrite(dsetID, type, H5S_ALL, H5S_ALL, plistID, values);
  + EXPECT_GE(ret, 0);
  #ifdef DOUBLECHECK
  size_t typesize = H5Tget_size(type);
  char *val = (char *)(calloc(typesize, sizeof(char)));
  hid_t ret2 = H5Dread(dsetID, type, H5S_ALL, H5S_ALL, H5P_DEFAULT, val);
  + EXPECT_GE(ret2, 0);
  std::cerr << " .... typesize=" << typesize << " val=" << val
  << std::endl;
  free val;
  