qemu: Don't fail without emulatorpin or cpumask
qemu: Don't fail without emulatorpin or cpumask

This unbreaks qemu:///session that got broken by
ba63d8f7d843461f77a8206c1ef9da38388713e5.

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