chore: remove unnecessary =nil

core/fetcher.go

@@ -317,30 +317,24 @@ func partsToBlock(parts []*tmproto.Part) (*types.Block, error) {
 	partSet := types.NewPartSetFromHeader(types.PartSetHeader{
 		Total: uint32(len(parts)),
 	})
-	for i, part := range parts {
+	for _, part := range parts {
 		ok, err := partSet.AddPartWithoutProof(&types.Part{Index: part.Index, Bytes: part.Bytes})
 		if err != nil {
 			return nil, err
 		}
 		if !ok {
 			return nil, err
 		}
-		// free up memory by clearing reference
-		parts[i] = nil
 	}
 	pbb := new(tmproto.Block)
 	bz, err := io.ReadAll(partSet.GetReader())
 	if err != nil {
 		return nil, err
 	}
-	// free up memory by clearing reference
-	partSet = nil
 	err = proto.Unmarshal(bz, pbb)
 	if err != nil {
 		return nil, err
 	}
-	// free up memory by clearing reference
-	bz = nil
 	block, err := types.BlockFromProto(pbb)
 	if err != nil {
 		return nil, err