nwfilter: Fix memory leak on daemon init and shutdown
nwfilter: Fix memory leak on daemon init and shutdown

This patch fixes a memory leak on daemon init and shutdown. The module
was initialized twice and not shut down.

agx/libvirt,rmarwaha/libvirt,datto/libvirt,sshah-solarflare/Libvirt-PCI-passthrough-,warewolf/libvirt,andreabolognani/libvirt,danwent/libvirt-ovs,cbosdo/libvirt,siboulet/libvirt-openvz,kantai/libvirt-vfork,nertpinx/libvirt,jeckersb/libvirt,taget/libvirt,wiedi/libvirt,amery/libvirt-vserver,VenkatDatta/libvirt,soulxu/libvirt-xuhj,emaste/libvirt,rbu/libvirt,zhlcindy/libvirt-1.1.4-maintain,sshah-solarflare/Libvirt-PCI-passthrough-,dumbbell/libvirt,zippy2/libvirt,rmarwaha/libvirt1,zhlcindy/libvirt-1.1.4-maintain,jeckersb/libvirt,trainstack/libvirt,libvirt/libvirt,bjzhang/libvirt,rmarwaha/libvirt1,nertpinx/libvirt,trainstack/libvirt,eskultety/libvirt,wiedi/libvirt,rmarwaha/libvirt,crobinso/libvirt,taget/libvirt,soulxu/libvirt-xuhj,jardasgit/libvirt,emaste/libvirt,VenkatDatta/libvirt,cbosdo/libvirt,warewolf/libvirt,novel/fbsd-libvirt,foomango/libvirt,jfehlig/libvirt,fabianfreyer/libvirt,wiedi/libvirt,usc-isi/libvirt,olafhering/libvirt,crobinso/libvirt,novel/fbsd-libvirt,jfehlig/libvirt,zippy2/libvirt,sshah-solarflare/Libvirt-PCI-passthrough-,usc-isi/libvirt,iam-TJ/libvirt,crobinso/libvirt,iam-TJ/libvirt,eskultety/libvirt,rmarwaha/libvirt1,zippy2/libvirt,leilihh/libvirt,cbosdo/libvirt,elmarco/libvirt,siboulet/libvirt-openvz,trainstack/libvirt,taget/libvirt,olafhering/libvirt,fabianfreyer/libvirt,dumbbell/libvirt,eskultety/libvirt,taget/libvirt,wiedi/libvirt,trainstack/libvirt,leilihh/libvirt,rmarwaha/libvirt1,trainstack/libvirt,soulxu/libvirt-xuhj,VenkatDatta/libvirt,trainstack/libvirt,amery/libvirt-vserver,leilihh/libvirt,eskultety/libvirt,jardasgit/libvirt,wiedi/libvirt,warewolf/libvirt,andreabolognani/libvirt,zhlcindy/libvirt-1.1.4-maintain,agx/libvirt,kantai/libvirt-vfork,amery/libvirt-vserver,foomango/libvirt,fabianfreyer/libvirt,zippy2/libvirt,rlaager/libvirt,rmarwaha/libvirt1,soulxu/libvirt-xuhj,zhlcindy/libvirt-1.1.4-maintain,kantai/libvirt-vfork,iam-TJ/libvirt,usc-isi/libvirt,shugaoye/libvirt,jardasgit/libvirt,emaste/libvirt,nertpinx/libvirt,leilihh/libvirt,shugaoye/libvirt,novel/fbsd-libvirt,dumbbell/libvirt,taget/libvirt,jeckersb/libvirt,rlaager/libvirt,foomango/libvirt,elmarco/libvirt,jfehlig/libvirt,danwent/libvirt-ovs,wiedi/libvirt,jardasgit/libvirt,shugaoye/libvirt,zhlcindy/libvirt-1.1.4-maintain,iam-TJ/libvirt,eskultety/libvirt,olafhering/libvirt,emaste/libvirt,libvirt/libvirt,siboulet/libvirt-openvz,bjzhang/libvirt,andreabolognani/libvirt,sshah-solarflare/Libvirt-PCI-passthrough-,danwent/libvirt-ovs,jardasgit/libvirt,andreabolognani/libvirt,rmarwaha/libvirt,trainstack/libvirt,iam-TJ/libvirt,fabianfreyer/libvirt,novel/fbsd-libvirt,VenkatDatta/libvirt,crobinso/libvirt,novel/fbsd-libvirt,novel/fbsd-libvirt,agx/libvirt,amery/libvirt-vserver,datto/libvirt,datto/libvirt,libvirt/libvirt,nertpinx/libvirt,leilihh/libvirt,andreabolognani/libvirt,elmarco/libvirt,kantai/libvirt-vfork,jeckersb/libvirt,jfehlig/libvirt,rbu/libvirt,rbu/libvirt,rlaager/libvirt,shugaoye/libvirt,iam-TJ/libvirt,rbu/libvirt,novel/fbsd-libvirt,siboulet/libvirt-openvz,usc-isi/libvirt,bjzhang/libvirt,datto/libvirt,shugaoye/libvirt,emaste/libvirt,jeckersb/libvirt,sshah-solarflare/Libvirt-PCI-passthrough-,rlaager/libvirt,wiedi/libvirt,novel/fbsd-libvirt,emaste/libvirt,danwent/libvirt-ovs,foomango/libvirt,dumbbell/libvirt,fabianfreyer/libvirt,danwent/libvirt-ovs,rlaager/libvirt,olafhering/libvirt,warewolf/libvirt,jeckersb/libvirt,kantai/libvirt-vfork,rmarwaha/libvirt,bjzhang/libvirt,rbu/libvirt,leilihh/libvirt,agx/libvirt,dumbbell/libvirt,emaste/libvirt,iam-TJ/libvirt,warewolf/libvirt,agx/libvirt,dumbbell/libvirt,rmarwaha/libvirt,cbosdo/libvirt,warewolf/libvirt,elmarco/libvirt,nertpinx/libvirt,jeckersb/libvirt,libvirt/libvirt,rmarwaha/libvirt1,foomango/libvirt,usc-isi/libvirt,amery/libvirt-vserver,soulxu/libvirt-xuhj,VenkatDatta/libvirt,novel/fbsd-libvirt,elmarco/libvirt,bjzhang/libvirt,datto/libvirt,siboulet/libvirt-openvz,warewolf/libvirt,cbosdo/libvirt,rmarwaha/libvirt