UB in rend_parse_v2_service_descriptor()
```
version = (int) tor_parse_long(smartlist_get(versions, i),
10, 0, INT_MAX, &num_ok, NULL);
if (!num_ok) /* It's a string; let's ignore it. */
continue;
result->protocols |= 1 << version;
```
This is UB if 'version' is bigger than the size of integer of the platform.
issue