Don't install unicast flows in case where in_port is the out_port.
Don't install unicast flows in case where in_port is the out_port.

 * Thanks to Chris Lorier for the patch.
 * Thanks to Brendon Jones for reporting the bug.

asmltd/faucet,trentindav/faucet,byllyfish/faucet,REANNZ/faucet,isomer/faucet,shivarammysore/faucet,gwacter/faucet,asmltd/faucet,trentindav/faucet,trungdtbk/faucet,solidgoldbomb/valve,faucetsdn/faucet,gizmoguy/faucet,mwutzke/faucet,isomer/faucet,asmltd/faucet,trungdtbk/valve,gwacter/faucet,asmltd/faucet,anarkiwi/faucet,wackerly/faucet,asmltd/faucet,anarkiwi/faucet,byllyfish/faucet,Bairdo/faucet,openvapour/valve,mwutzke/faucet,gizmoguy/faucet,Bairdo/faucet,faucetsdn/faucet,shivarammysore/faucet,buraglio-esnet/faucet,wackerly/faucet,REANNZ/faucet,trungdtbk/faucet,wandsdn/valve