Fix DBStats method

packages/binary/messagelayer/tangle/tangle.go

@@ -148,15 +148,15 @@ func (tangle *Tangle) Prune() error {
 func (tangle *Tangle) DBStats() (solidCount int, messageCount int, avgSolidificationTime float64) {
 	var sumSolidificationTime time.Duration
 	tangle.messageMetadataStorage.ForEach(func(key []byte, cachedObject objectstorage.CachedObject) bool {
-		defer cachedObject.Release()
-		cachedMessageMetadata := &CachedMessageMetadata{CachedObject: cachedObject}
-		msgMetaData := cachedMessageMetadata.Unwrap()
+		cachedObject.Consume(func(object objectstorage.StorableObject) {
+			msgMetaData := object.(*MessageMetadata)
 			messageCount++
 			received := msgMetaData.ReceivedTime()
 			if msgMetaData.IsSolid() {
 				solidCount++
 				sumSolidificationTime += msgMetaData.solidificationTime.Sub(received)
 			}
+		})
 		return true
 	})
 	avgSolidificationTime = float64(sumSolidificationTime.Milliseconds()) / float64(solidCount)