ompi/datatype: fix how we compute the space needed for the args#6332

bwbarrett merged 1 commit intoopen-mpi:v3.0.xopen-mpi/ompi:v3.0.xfrom

ggouaillardet:topic/v3.0.x/ompi_datatype_set_argsggouaillardet/ompi:topic/v3.0.x/ompi_datatype_set_argsCopy head branch name to clipboard