The previous commit missed two unquoted variable expansions.  This had the unfortunate side-effect of breaking the security script for hosts without kernel support for IPFW. Fix.
The previous commit missed two unquoted variable expansions.  This had
the unfortunate side-effect of breaking the security script for hosts
without kernel support for IPFW. Fix.

Reported by:	jhay

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase