security/arirang: Fix patch in some envs

/nxb-bin/usr/bin/sed -i.bak -e 's/ccnxb-bin/usr/bin/cc/g' /wrkdirs/usr/ports/security/arirang/work/arirang-2.03/extconf.rb sed: 1:
"s/ccnxb-bin/usr/bin/c ...": bad flag in substitute command: 'n'