wallet: unlock outpoints in case of fee processment fail

wallet/createtx.go

@@ -1536,14 +1536,19 @@ func (w *Wallet) purchaseTickets(ctx context.Context, op errors.Op,
 	if req.VSPFeePaymentProcess != nil {
 		unlockCredits = false
 		for i, ticketHash := range purchaseTicketsResponse.TicketHashes {
-			_, err := req.VSPFeePaymentProcess(ctx, ticketHash, vspFeeCredits[i])
+			_, err = req.VSPFeePaymentProcess(ctx, ticketHash, vspFeeCredits[i])
 			if err != nil {
-				// TODO save fee tx on db in case of failure?
-				return purchaseTicketsResponse, err
+				// unlock outpoints in case of error
+				log.Errorf("vsp ticket %v fee proccessment failed: %v", ticketHash, err)
+				for _, outpoint := range vspFeeCredits[i] {
+					w.UnlockOutpoint(&outpoint.OutPoint.Hash, outpoint.OutPoint.Index)
+				}
+				continue
 			}
 		}
 	}
-	return purchaseTicketsResponse, nil
+
+	return purchaseTicketsResponse, err
 }
 
 // ReserveOutputsForAmount returns locked spendable outpoints from the given