virtlockd: use common exit path when out-of-memory
virtlockd: use common exit path when out-of-memory

Also use a distinct, valid exit status for daemon re-execution failure.

Signed-off-by: Michael Chapman <a17fed27eaa842282862ff7c1b9c8395a26ac320@very.puzzling.org>

elmarco/libvirt,rlaager/libvirt,andreabolognani/libvirt,VenkatDatta/libvirt,rlaager/libvirt,andreabolognani/libvirt,andreabolognani/libvirt,datto/libvirt,datto/libvirt,jfehlig/libvirt,nertpinx/libvirt,datto/libvirt,eskultety/libvirt,elmarco/libvirt,elmarco/libvirt,nertpinx/libvirt,jardasgit/libvirt,crobinso/libvirt,olafhering/libvirt,jfehlig/libvirt,zippy2/libvirt,fabianfreyer/libvirt,andreabolognani/libvirt,taget/libvirt,eskultety/libvirt,VenkatDatta/libvirt,jfehlig/libvirt,rlaager/libvirt,jardasgit/libvirt,agx/libvirt,zippy2/libvirt,fabianfreyer/libvirt,jardasgit/libvirt,shugaoye/libvirt,taget/libvirt,olafhering/libvirt,fabianfreyer/libvirt,agx/libvirt,shugaoye/libvirt,fabianfreyer/libvirt,taget/libvirt,crobinso/libvirt,jardasgit/libvirt,shugaoye/libvirt,shugaoye/libvirt,eskultety/libvirt,libvirt/libvirt,shugaoye/libvirt,libvirt/libvirt,crobinso/libvirt,taget/libvirt,elmarco/libvirt,libvirt/libvirt,nertpinx/libvirt,crobinso/libvirt,jfehlig/libvirt,VenkatDatta/libvirt,VenkatDatta/libvirt,rlaager/libvirt,fabianfreyer/libvirt,agx/libvirt,olafhering/libvirt,jardasgit/libvirt,datto/libvirt,eskultety/libvirt,libvirt/libvirt,andreabolognani/libvirt,eskultety/libvirt,zippy2/libvirt,agx/libvirt,zippy2/libvirt,datto/libvirt,taget/libvirt,olafhering/libvirt,agx/libvirt,rlaager/libvirt,nertpinx/libvirt,VenkatDatta/libvirt,elmarco/libvirt,nertpinx/libvirt