
Fix end-of-scan termination condition. When we run out of
entry nodes due to a consensus change, we don't update the
exit restricted routers list, and so they do not yet have 
full _generated[] lists. In either case, we can't scan 
at this point any more anyways without some
restriction-changing magic.



git-svn-id: 121ed801b906f2796fede3157ede8745e71e6db9@19611 55e972cd-5a19-0410-ae62-a4d7a52db4cd

isislovecruft/torflow,isislovecruft/torflow,isislovecruft/torflow,isislovecruft/torflow