Fixed error in calculation of memory requirement for reaction cross sections.
Fixed error in calculation of memory requirement for reaction cross sections.

shenqicang/openmc,bhermanmit/cdash,shikhar413/openmc,walshjon/openmc,samuelshaner/openmc,wbinventor/openmc,shikhar413/openmc,liangjg/openmc,amandalund/openmc,johnnyliu27/openmc,walshjon/openmc,johnnyliu27/openmc,kellyrowland/openmc,bhermanmit/openmc,shikhar413/openmc,johnnyliu27/openmc,wbinventor/openmc,nhorelik/openmc,mit-crpg/openmc,mit-crpg/openmc,walshjon/openmc,samuelshaner/openmc,kellyrowland/openmc,amandalund/openmc,wbinventor/openmc,wbinventor/openmc,samuelshaner/openmc,keadyk/openmc_mg_prepush,mjlong/openmc,lilulu/openmc,samuelshaner/openmc,walshjon/openmc,paulromano/openmc,amandalund/openmc,nhorelik/openmc,keadyk/openmc_mg_prepush,amandalund/openmc,liangjg/openmc,smharper/openmc,mjlong/openmc,paulromano/openmc,shikhar413/openmc,lilulu/openmc,keadyk/openmc_mg_prepush,mit-crpg/openmc,smharper/openmc,bhermanmit/openmc,paulromano/openmc,shenqicang/openmc,liangjg/openmc,liangjg/openmc,sxds/opemmc,mit-crpg/openmc,smharper/openmc,sxds/opemmc,paulromano/openmc,smharper/openmc,johnnyliu27/openmc,lilulu/openmc