fix broken bbolt database cleanup process (#848) (#848)

Closes #820, was broken since #761

docs/docs/CHANGELOG.md

@@ -12,6 +12,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## [Unreleased]
 
 <!-- This changes the project to: -->
+- Expired records are now properly removed from bbolt databases ([#848](https://github.com/TecharoHQ/anubis/pull/848)).
 
 - Fix hanging on service restart ([#853](https://github.com/TecharoHQ/anubis/issues/853))
 

lib/store/bbolt/bbolt.go

@@ -142,7 +142,7 @@ func (s *Store) cleanup(ctx context.Context) error {
 			}
 
 			if now.After(expiry) {
-				return valueBkt.DeleteBucket(key)
+				return tx.DeleteBucket(key)
 			}
 
 			return nil