Improve public key fetching for closed/terminated wallets #813
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Closes: #812
The current logic used to fetch wallet public keys was throwing errors while used for
Closed
orTerminated
wallets. This is because theWalletRegistry
contract does no longer hold the public key for such wallets. In effect, the exception was propagated upstream and caused problems while searching wallets for redemption.Here we fix that problem by making the public key field optional and keeping it undefined for closed/terminated wallets. That way, the client code can detect this fact and omit closed/terminated wallets during processing.