ChangeLog: reference to 18625 actually corresponds to 18626
The ChangeLog lines:
```
- Avoid spurious failures from configure files related to calling
exit(0) in TOR_SEARCH_LIBRARY. Fixes bug 18625; bugfix on
0.2.0.1-alpha. Patch from "cypherpunks".
```
actually correspond to legacy/trac#18626.
This issue was added in commit db13527.
issue