fix lint errors.

markets/dagstore/lotusaccessor.go

@@ -65,7 +65,6 @@ func (m *lotusAccessor) IsUnsealed(ctx context.Context, pieceCid cid.Cid) (bool,
 		return false, xerrors.Errorf("failed while waiting for accessor to start: %w", err)
 	}
 
-
 	var pieceInfo piecestore.PieceInfo
 	err = m.throttle.Do(ctx, func(ctx context.Context) (err error) {
 		pieceInfo, err = m.pieceStore.GetPieceInfo(pieceCid)

markets/dagstore/lotusaccessor_test.go

@@ -194,7 +194,7 @@ func getPieceStore(t *testing.T) piecestore.PieceStore {
 
 	err = ps.Start(context.Background())
 	require.NoError(t, err)
-	<- ch
+	<-ch
 	return ps
 }
 

markets/dagstore/wrapper_test.go

@@ -92,7 +92,8 @@ func TestWrapperBackground(t *testing.T) {
 	w.dagStore = mock
 
 	// Start up the wrapper
-	w.Start(ctx)
+	err = w.Start(ctx)
+	require.NoError(t, err)
 
 	// Expect GC to be called automatically
 	tctx, cancel := context.WithTimeout(ctx, time.Second)