build: fix qemu build failure in previous patch
build: fix qemu build failure in previous patch

This last minute addition caused a build failure

cc1: warnings being treated as errors
qemu/qemu_process.c: In function 'qemuProcessHandleWatchdog':
qemu/qemu_process.c:436:34: error: ignoring return value of 'virDomainObjUnref', declared with attribute warn_unused_result [-Wunused-result]
make[3]: *** [libvirt_driver_qemu_la-qemu_process.lo] Error 1

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