clean up r10240 so we avoid the exit node itself too

svn:r10242

src/or/circuitbuild.c

@@ -2345,6 +2345,7 @@ choose_random_entry(cpath_build_state_t *state)
   int need_uptime = state->need_uptime;
   int need_capacity = state->need_capacity;
 
+  smartlist_add(exit_family, chosen_exit);
   routerlist_add_family(exit_family, chosen_exit);
 
   if (!entry_guards)