**app/models/merge_request.rb**:

- Fix how `MergeRequest#merge_pipeline` is found to account for FF merge

**changelogs/unreleased/fix-pipeline-link.yml**:

- Changelog entry for this fix

**spec/models/environment_status_spec.rb**:

- Code this test was exercising is better covered in merge_request_spec

**spec/models/merge_request_spec.rb**:

- Test that new logic works in the face of FF merge and squash FF merge