mumps: flake8 fixes
mumps: flake8 fixes

matthiasdiener/spack,krafczyk/spack,krafczyk/spack,krafczyk/spack,skosukhin/spack,EmreAtes/spack,EmreAtes/spack,TheTimmy/spack,iulian787/spack,iulian787/spack,skosukhin/spack,krafczyk/spack,iulian787/spack,iulian787/spack,matthiasdiener/spack,EmreAtes/spack,LLNL/spack,lgarren/spack,EmreAtes/spack,LLNL/spack,lgarren/spack,EmreAtes/spack,tmerrick1/spack,LLNL/spack,TheTimmy/spack,krafczyk/spack,matthiasdiener/spack,TheTimmy/spack,skosukhin/spack,lgarren/spack,iulian787/spack,skosukhin/spack,skosukhin/spack,matthiasdiener/spack,matthiasdiener/spack,mfherbst/spack,mfherbst/spack,lgarren/spack,mfherbst/spack,tmerrick1/spack,tmerrick1/spack,LLNL/spack,tmerrick1/spack,mfherbst/spack,tmerrick1/spack,mfherbst/spack,LLNL/spack,TheTimmy/spack,TheTimmy/spack,lgarren/spack