qemu: snapshot: Don't leak XML definition if restarting of CPUs fails
qemu: snapshot: Don't leak XML definition if restarting of CPUs fails

In case the snapshot code isn't able to restart CPUs after an external
checkpoint we would leak a copy of the domains XML definition. This
patch fixes the cleanup path.

siboulet/libvirt-openvz,trainstack/libvirt,jeckersb/libvirt,agx/libvirt,nertpinx/libvirt,cbosdo/libvirt,fabianfreyer/libvirt,datto/libvirt,emaste/libvirt,libvirt/libvirt,bjzhang/libvirt,taget/libvirt,bjzhang/libvirt,zhlcindy/libvirt-1.1.4-maintain,shugaoye/libvirt,emaste/libvirt,fabianfreyer/libvirt,elmarco/libvirt,agx/libvirt,iam-TJ/libvirt,iam-TJ/libvirt,siboulet/libvirt-openvz,nertpinx/libvirt,nertpinx/libvirt,siboulet/libvirt-openvz,jardasgit/libvirt,datto/libvirt,VenkatDatta/libvirt,cbosdo/libvirt,crobinso/libvirt,andreabolognani/libvirt,emaste/libvirt,elmarco/libvirt,libvirt/libvirt,crobinso/libvirt,bjzhang/libvirt,libvirt/libvirt,datto/libvirt,agx/libvirt,jeckersb/libvirt,elmarco/libvirt,trainstack/libvirt,taget/libvirt,cbosdo/libvirt,rlaager/libvirt,zhlcindy/libvirt-1.1.4-maintain,jeckersb/libvirt,zhlcindy/libvirt-1.1.4-maintain,zippy2/libvirt,jfehlig/libvirt,olafhering/libvirt,trainstack/libvirt,andreabolognani/libvirt,shugaoye/libvirt,rlaager/libvirt,siboulet/libvirt-openvz,bjzhang/libvirt,iam-TJ/libvirt,andreabolognani/libvirt,libvirt/libvirt,jardasgit/libvirt,datto/libvirt,jfehlig/libvirt,jfehlig/libvirt,crobinso/libvirt,iam-TJ/libvirt,iam-TJ/libvirt,taget/libvirt,fabianfreyer/libvirt,eskultety/libvirt,jardasgit/libvirt,VenkatDatta/libvirt,VenkatDatta/libvirt,emaste/libvirt,jeckersb/libvirt,eskultety/libvirt,zhlcindy/libvirt-1.1.4-maintain,siboulet/libvirt-openvz,shugaoye/libvirt,nertpinx/libvirt,taget/libvirt,datto/libvirt,VenkatDatta/libvirt,olafhering/libvirt,VenkatDatta/libvirt,zippy2/libvirt,jfehlig/libvirt,eskultety/libvirt,olafhering/libvirt,olafhering/libvirt,trainstack/libvirt,jeckersb/libvirt,emaste/libvirt,zippy2/libvirt,zippy2/libvirt,eskultety/libvirt,andreabolognani/libvirt,shugaoye/libvirt,taget/libvirt,iam-TJ/libvirt,zhlcindy/libvirt-1.1.4-maintain,rlaager/libvirt,rlaager/libvirt,jardasgit/libvirt,iam-TJ/libvirt,trainstack/libvirt,shugaoye/libvirt,emaste/libvirt,fabianfreyer/libvirt,elmarco/libvirt,fabianfreyer/libvirt,bjzhang/libvirt,crobinso/libvirt,emaste/libvirt,cbosdo/libvirt,eskultety/libvirt,jeckersb/libvirt,trainstack/libvirt,cbosdo/libvirt,agx/libvirt,nertpinx/libvirt,andreabolognani/libvirt,rlaager/libvirt,jardasgit/libvirt,jeckersb/libvirt,trainstack/libvirt,agx/libvirt,elmarco/libvirt