Update src/settings.cpp
Update src/settings.cpp

Co-authored-by: Paul Romano <a436801bae4f27296736e9545e95ef593e23fd3e@gmail.com>
shikhar413/openmc,walshjon/openmc,amandalund/openmc,shikhar413/openmc,amandalund/openmc,shikhar413/openmc,walshjon/openmc,walshjon/openmc,walshjon/openmc,amandalund/openmc,shikhar413/openmc,amandalund/openmc