Fix incorrect checking 'cmfd.xml'
Fix incorrect checking 'cmfd.xml'

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