Commits
Merge pull request #2059 in HDFFV/hdf5 from ~JSOUMAGNE/hdf5:topic_nullref to develop * commit '6b68cc352ffabb5fe997db1eb52216b3ee80e669': H5R: fix H5Tconv to check for null references
Merge pull request #2059 in HDFFV/hdf5 from ~JSOUMAGNE/hdf5:topic_nullref to develop * commit '6b68cc352ffabb5fe997db1eb52216b3ee80e669': H5R: fix H5Tconv to check for null references