conf: Don't leak 'primary' video property on error
conf: Don't leak 'primary' video property on error

It's only freed on normal returns from virDomainVideoDefParseXML,
but not when erroring out.

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