fix paying extrinsic with custom asset

[clangenb]

My testing for #401 was unfortunately not good enough; it only worked when the assetId was null when sending extrinsics. This PR fixes now the non-null case.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (ca49c1b) 46.91% compared to head (10be4a9) 50.72%.

Additional details and impacted files

[](https://app.codecov.io/gh/leonardocustodio/polkadart/pull/402?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Leonardo+Custodio) ```diff @@ Coverage Diff @@ ## main #402 +/- ## ========================================== + Coverage 46.91% 50.72% +3.80% ========================================== Files 164 127 -37 Lines 8926 7365 -1561 ========================================== - Hits 4188 3736 -452 + Misses 4738 3629 -1109 ``` | [Flag](https://app.codecov.io/gh/leonardocustodio/polkadart/pull/402/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Leonardo+Custodio) | Coverage Δ | | |---|---|---| | [polkadart](https://app.codecov.io/gh/leonardocustodio/polkadart/pull/402/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Leonardo+Custodio) | `?` | | | [polkadart_cli](https://app.codecov.io/gh/leonardocustodio/polkadart/pull/402/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Leonardo+Custodio) | `12.05% <ø> (ø)` | | | [polkadart_keyring](https://app.codecov.io/gh/leonardocustodio/polkadart/pull/402/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Leonardo+Custodio) | `77.24% <ø> (ø)` | | | [polkadart_scale_codec](https://app.codecov.io/gh/leonardocustodio/polkadart/pull/402/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Leonardo+Custodio) | `54.93% <ø> (ø)` | | | [sr25519](https://app.codecov.io/gh/leonardocustodio/polkadart/pull/402/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Leonardo+Custodio) | `85.91% <ø> (ø)` | | | [ss58](https://app.codecov.io/gh/leonardocustodio/polkadart/pull/402/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Leonardo+Custodio) | `?` | | | [substrate_bip39](https://app.codecov.io/gh/leonardocustodio/polkadart/pull/402/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Leonardo+Custodio) | `?` | | | [substrate_metadata](https://app.codecov.io/gh/leonardocustodio/polkadart/pull/402/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Leonardo+Custodio) | `87.61% <ø> (ø)` | | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Leonardo+Custodio#carryforward-flags-in-the-pull-request-comment) to find out more. [see 37 files with indirect coverage changes](https://app.codecov.io/gh/leonardocustodio/polkadart/pull/402/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Leonardo+Custodio)

[leonardocustodio]

Released under polkadart: 0.3.2