Fix a couple ifs in account quota middleware.
Fix a couple ifs in account quota middleware.

Unless I'm misunderstanding something, this is better/more
correct.

Change-Id: I6c62fbfdddea908a2671021a34fa25600b0dff45

sarvesh-ranjan/swift,mjzmjz/swift,rackerlabs/swift,redhat-openstack/swift,prashanthpai/swift,IPVL/swift-kilo,scality/ScalitySproxydSwift,anishnarang/gswift,psachin/swift,hbhdytf/mac2,psachin/swift,eatbyte/Swift,IPVL/swift-kilo,iostackproject/IO-Bandwidth-Differentiation,Seagate/swift,openstack/swift,hbhdytf/mac2,matthewoliver/swift,eatbyte/Swift,rackerlabs/swift,dencaval/swift,hurricanerix/swift,aerwin3/swift,bouncestorage/swift,hurricanerix/swift,openstack/swift,dpgoetz/swift,wenhuizhang/swift,notmyname/swift,tipabu/swift,larsbutler/swift,gold3bear/swift,clayg/swift,bradleypj823/swift,takeshineshiro/swift,notmyname/swift,williamthegrey/swift,dencaval/swift,bradleypj823/swift,sarvesh-ranjan/swift,Em-Pan/swift,hurricanerix/swift,smerritt/swift,takeshineshiro/swift,iostackproject/IO-Bandwidth-Differentiation,swiftstack/swift,Khushbu27/Tutorial,hbhdytf/mac,prashanthpai/swift,swiftstack/swift,openstack/swift,clayg/swift,nadeemsyed/swift,daasbank/swift,clayg/swift,xiaoguoai/ec-dev-swift,matthewoliver/swift,notmyname/swift,mjzmjz/swift,AfonsoFGarcia/swift,hurricanerix/swift,daasbank/swift,williamthegrey/swift,Seagate/swift,thiagodasilva/swift,psachin/swift,bkolli/swift,tipabu/swift,mjwtom/swift,revoer/keystone-8.0.0,xiaoguoai/ec-dev-swift,wenhuizhang/swift,shibaniahegde/OpenStak_swift,NeCTAR-RC/swift,nadeemsyed/swift,tipabu/swift,thiagodasilva/swift,psachin/swift,AfonsoFGarcia/swift,redbo/swift,Khushbu27/Tutorial,Akanoa/swift,mjwtom/swift,nadeemsyed/swift,larsbutler/swift,revoer/keystone-8.0.0,NeCTAR-RC/swift,aerwin3/swift,notmyname/swift,matthewoliver/swift,bkolli/swift,gold3bear/swift,maginatics/swift,nadeemsyed/swift,matthewoliver/swift,dpgoetz/swift,smerritt/swift,Akanoa/swift,anishnarang/gswift,Em-Pan/swift,openstack/swift,hbhdytf/mac2,swiftstack/swift,clayg/swift,smerritt/swift,maginatics/swift,redhat-openstack/swift,redbo/swift,smerritt/swift,shibaniahegde/OpenStak_swift,bouncestorage/swift,levythu/swift,hbhdytf/mac2,scality/ScalitySproxydSwift,levythu/swift,zackmdavis/swift,zackmdavis/swift,tipabu/swift,hbhdytf/mac