[taler-wallet-core] 04/04: tolerate zero-value payments

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dold pushed a commit to branch master
in repository wallet-core.

commit 1c0cce3f5812cd2796ab9693b47f035427ca5340
Author: Florian Dold <florian@dold.me>
AuthorDate: Mon Jul 12 15:55:31 2021 +0200

    tolerate zero-value payments
---
 packages/taler-wallet-core/src/operations/pay.ts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/packages/taler-wallet-core/src/operations/pay.ts 
b/packages/taler-wallet-core/src/operations/pay.ts
index 33d3bc83..fed61428 100644
--- a/packages/taler-wallet-core/src/operations/pay.ts
+++ b/packages/taler-wallet-core/src/operations/pay.ts
@@ -145,7 +145,8 @@ export async function getTotalPaymentCost(
         costs.push(pcs.coinContributions[i]);
         costs.push(refreshCost);
       }
-      return Amounts.sum(costs).amount;
+      const zero = Amounts.getZero(pcs.paymentAmount.currency);
+      return Amounts.sum([zero, ...costs]).amount;
     });
 }
 

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