Fixed line continuation for error in Filter
Fixed line continuation for error in Filter

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