fix to JSONNode parser

git-svn-id: svn+ssh://portal-auth.nersc.gov/project/projectdirs/visit/svn/visit/trunk/src@21698 18c085ea-50e0-402c-830e-de6fd14e8384
fixing a UMR

git-svn-id: svn+ssh://portal-auth.nersc.gov/project/projectdirs/visit/svn/visit/trunk/src@21699 18c085ea-50e0-402c-830e-de6fd14e8384