Don't set ifaddr::in_addrs to 1 after an ``iface clear'' on an interface with no addresses.
Don't set ifaddr::in_addrs to 1 after an ``iface clear'' on an interface
with no addresses.

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