Increase go-conformity: map[T]struct{} instead of map[T]bool for sets

1 files changed, 2 insertions, 2 deletions

diff --git a/internal/feed/cache/v1.go b/internal/feed/cache/v1.go
index 5675db5..1c64513 100644
--- a/internal/feed/cache/v1.go
+++ b/internal/feed/cache/v1.go
@@ -377,9 +377,9 @@ func filterItems(items []cachedItem) []cachedItem {
 	return copiedItems
 }
 
-func (cache *v1Cache) cleanup(knownDescriptors map[feed.Descriptor]bool) {
+func (cache *v1Cache) cleanup(knownDescriptors map[feed.Descriptor]struct{}) {
 	for descr, id := range cache.Ids {
-		if knownDescriptors[descr] {
+		if _, ok := knownDescriptors[descr]; ok {
 			// do not delete stuff still known to us
 			continue
 		}