Fix bug in nuclide density retrieval from volume calculation
Fix bug in nuclide density retrieval from volume calculation

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