anchor.diff:    FPrevious_Seller_updated_block := 0;
     FHasValidSignature := false;
     FUsedPubkeyForSignature:=CT_TECDSA_Public_Nul;
  -  FBufferedSha256:='';
  +  FBufferedSha256 := Nil;
   end;
   
   procedure TPCOperation.FillOperationResume(Block: Cardinal; getInfoForAllAccounts : Boolean; Affected_account_number: Cardinal; var OperationResume: TOperationResume);
  
positive.code:   FListOrderedByOpReference := TList.Create;
    FTotalAmount := 0;
    FTotalFee := 0;
    FHashTree := '';
    FMax0feeOperationsBySigner := -1; // Unlimited by default
    FHashTreeOperations := TPCThreadList.Create('TOperationsHashTree_HashTreeOperations');
  end;
  
negative.code: constructor TPCOperation.Create;
  begin
    FHasValidSignature := False;
    FBufferedSha256:=Nil;
    FUsedPubkeyForSignature := CT_TECDSA_Public_Nul;
    InitializeData;
  end;
  