security_dac: annotate some functions with ATTRIBUTE_NONNULL
security_dac: annotate some functions with ATTRIBUTE_NONNULL

Annotate some static function parameters with ATTRIBUTE_NONNULL
and remove checks for NULL inputs.

Signed-off-by: Michal Privoznik <83d82aaba2eed257f4814b0c239c260c4caaadf0@redhat.com>
Signed-off-by: Jim Fehlig <39929b5b86d72d51fceac59b52303e3fe8a3083e@suse.com>

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