Some cleanup of style and an assignement change.
Some cleanup of style and an assignement change.

liangjg/openmc,amandalund/openmc,shikhar413/openmc,walshjon/openmc,amandalund/openmc,shikhar413/openmc,smharper/openmc,smharper/openmc,johnnyliu27/openmc,amandalund/openmc,liangjg/openmc,wbinventor/openmc,mit-crpg/openmc,johnnyliu27/openmc,wbinventor/openmc,walshjon/openmc,mit-crpg/openmc,amandalund/openmc,mit-crpg/openmc,paulromano/openmc,wbinventor/openmc,johnnyliu27/openmc,paulromano/openmc,walshjon/openmc,mit-crpg/openmc,smharper/openmc,paulromano/openmc,smharper/openmc,johnnyliu27/openmc,wbinventor/openmc,shikhar413/openmc,shikhar413/openmc,liangjg/openmc,liangjg/openmc,paulromano/openmc,walshjon/openmc