Start fixes: parameter check and return code [v4.0.x]#10553

hppritcha merged 2 commits intoopen-mpi:v4.0.xopen-mpi/ompi:v4.0.xfrom

devreal:mpi-start-part-inactive-v4.0.xdevreal/ompi:mpi-start-part-inactive-v4.0.xCopy head branch name to clipboard