hooks: fix regression in previous patch
hooks: fix regression in previous patch

* src/util/hooks.c (virHookCheck): Missing hooks should just be
debug, not warn.

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