message: adios2_inquire_group_variables: Don't return early
  Closes
diff: @@ -434,9 +434,6 @@ adios2_error adios2_inquire_group_variables(adios2_variable ***variables,
  }
  *size = names.size();
  - if (*size == 0)
  - return adios2_error_none;
  -
  adios2_variable **list =
  (adios2_variable **)calloc(*size, sizeof(adios2_variable *));
  