don't use dead sessions

llarp/handlers/exit.cpp

@@ -567,6 +567,7 @@ namespace llarp
             {
               // if the iterators's exit is newer use it for the chosen exit for
               // key
+              if(!itr->second->LooksDead(now))
                 m_ChosenExits[itr->first] = itr->second.get();
             }
           }