Fix issue when passing RTI_LANGUAGE_CPP_MODERN in build script
Fix issue when passing RTI_LANGUAGE_CPP_MODERN in build script

rticommunity/rtiperftest,rticommunity/rtiperftest,rticommunity/rtiperftest,rticommunity/rtiperftest,rticommunity/rtiperftest,rticommunity/rtiperftest,rticommunity/rtiperftest