Clang issue with H5Literate2 and incompatible pointer logic.

[WardF]

Clang 16+ is giving an error related to incompatible pointer types; I've begin to observe this post #2958; the logic in hdf5open.c:read_hdf5_obj() is passing an "incompatible pointer". I'm putting up a PR momentarily that, at least on MacOS, corrects the logic re: which pointer type is passed. We'll see what the broader CI says.

References

• Undefined reference to `H5Literate' with IBM XL compiler #2714 - Original Issue with IBM XL Compiler
• Now use H5Literate2() instead of H5Literate() when its available #2958 - PR Related to addition of H5Literate2
• netcdf: fix darwin and more broadly clang builds NixOS/nixpkgs#330670 - Downstream project which addresses the issue with clang 16+