command: Fix ATTRIBUTE_UNUSED on virSetCapabilities
command: Fix ATTRIBUTE_UNUSED on virSetCapabilities

If we are building not on a WIN32 architecture and without HAVE_CAPNG
virSetCapabilities has unused argument and virClearCapabilities
is unused as well.

cbosdo/libvirt,nertpinx/libvirt,rmarwaha/libvirt1,rmarwaha/libvirt1,novel/fbsd-libvirt,wiedi/libvirt,andreabolognani/libvirt,olafhering/libvirt,emaste/libvirt,jeckersb/libvirt,foomango/libvirt,olafhering/libvirt,iam-TJ/libvirt,iam-TJ/libvirt,emaste/libvirt,datto/libvirt,cbosdo/libvirt,fabianfreyer/libvirt,warewolf/libvirt,andreabolognani/libvirt,shugaoye/libvirt,datto/libvirt,crobinso/libvirt,danwent/libvirt-ovs,fabianfreyer/libvirt,eskultety/libvirt,shugaoye/libvirt,jfehlig/libvirt,crobinso/libvirt,trainstack/libvirt,foomango/libvirt,trainstack/libvirt,siboulet/libvirt-openvz,rmarwaha/libvirt,nertpinx/libvirt,zippy2/libvirt,rmarwaha/libvirt1,bjzhang/libvirt,warewolf/libvirt,trainstack/libvirt,elmarco/libvirt,emaste/libvirt,danwent/libvirt-ovs,zhlcindy/libvirt-1.1.4-maintain,libvirt/libvirt,novel/fbsd-libvirt,iam-TJ/libvirt,eskultety/libvirt,bjzhang/libvirt,shugaoye/libvirt,jardasgit/libvirt,taget/libvirt,rmarwaha/libvirt,zippy2/libvirt,dumbbell/libvirt,iam-TJ/libvirt,jardasgit/libvirt,dumbbell/libvirt,jfehlig/libvirt,warewolf/libvirt,dumbbell/libvirt,rlaager/libvirt,elmarco/libvirt,crobinso/libvirt,novel/fbsd-libvirt,danwent/libvirt-ovs,emaste/libvirt,crobinso/libvirt,iam-TJ/libvirt,novel/fbsd-libvirt,nertpinx/libvirt,emaste/libvirt,trainstack/libvirt,wiedi/libvirt,jeckersb/libvirt,andreabolognani/libvirt,zhlcindy/libvirt-1.1.4-maintain,emaste/libvirt,taget/libvirt,elmarco/libvirt,fabianfreyer/libvirt,rmarwaha/libvirt,elmarco/libvirt,libvirt/libvirt,wiedi/libvirt,dumbbell/libvirt,novel/fbsd-libvirt,warewolf/libvirt,agx/libvirt,VenkatDatta/libvirt,trainstack/libvirt,dumbbell/libvirt,taget/libvirt,taget/libvirt,novel/fbsd-libvirt,cbosdo/libvirt,zhlcindy/libvirt-1.1.4-maintain,warewolf/libvirt,rmarwaha/libvirt,siboulet/libvirt-openvz,trainstack/libvirt,taget/libvirt,olafhering/libvirt,jfehlig/libvirt,datto/libvirt,agx/libvirt,andreabolognani/libvirt,cbosdo/libvirt,danwent/libvirt-ovs,emaste/libvirt,iam-TJ/libvirt,novel/fbsd-libvirt,rlaager/libvirt,rlaager/libvirt,zhlcindy/libvirt-1.1.4-maintain,VenkatDatta/libvirt,shugaoye/libvirt,agx/libvirt,eskultety/libvirt,warewolf/libvirt,siboulet/libvirt-openvz,foomango/libvirt,jardasgit/libvirt,elmarco/libvirt,jeckersb/libvirt,rmarwaha/libvirt,rlaager/libvirt,rmarwaha/libvirt,cbosdo/libvirt,rmarwaha/libvirt1,jardasgit/libvirt,dumbbell/libvirt,siboulet/libvirt-openvz,agx/libvirt,bjzhang/libvirt,jardasgit/libvirt,libvirt/libvirt,eskultety/libvirt,nertpinx/libvirt,warewolf/libvirt,jeckersb/libvirt,zhlcindy/libvirt-1.1.4-maintain,zippy2/libvirt,olafhering/libvirt,rlaager/libvirt,foomango/libvirt,jeckersb/libvirt,rmarwaha/libvirt1,agx/libvirt,andreabolognani/libvirt,jfehlig/libvirt,wiedi/libvirt,zippy2/libvirt,libvirt/libvirt,novel/fbsd-libvirt,wiedi/libvirt,shugaoye/libvirt,wiedi/libvirt,trainstack/libvirt,novel/fbsd-libvirt,jeckersb/libvirt,bjzhang/libvirt,jeckersb/libvirt,VenkatDatta/libvirt,wiedi/libvirt,rmarwaha/libvirt1,datto/libvirt,fabianfreyer/libvirt,siboulet/libvirt-openvz,danwent/libvirt-ovs,iam-TJ/libvirt,VenkatDatta/libvirt,foomango/libvirt,bjzhang/libvirt,fabianfreyer/libvirt,datto/libvirt,nertpinx/libvirt,VenkatDatta/libvirt,eskultety/libvirt