Don't enforce walking receipt tree during compaction

blockstore/splitstore/splitstore_compact.go

@@ -960,7 +960,7 @@ func (s *SplitStore) walkChain(ts *types.TipSet, inclState, inclMsgs abi.ChainEp
 					return xerrors.Errorf("error walking messages (cid: %s): %w", hdr.Messages, err)
 				}
 
-				if err := s.walkObject(hdr.ParentMessageReceipts, visitor, fHot); err != nil {
+				if err := s.walkObjectIncomplete(hdr.ParentMessageReceipts, visitor, fHot, stopWalk); err != nil {
 					return xerrors.Errorf("error walking message receipts (cid: %s): %w", hdr.ParentMessageReceipts, err)
 				}
 			}