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elements: consolidate fee outputs into a single fee output

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In the case that you've got more than one fee output already on a
psbt, we consolidate them into a single fee output (the first)
This commit is contained in:
niftynei 2020-09-09 20:52:08 -05:00 committed by Rusty Russell
parent 9771273c4d
commit 165d039f6c
1 changed files with 7 additions and 1 deletions
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8
bitcoin/psbt.c
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@ -327,7 +327,13 @@ void psbt_elements_normalize_fees(struct wally_psbt *psbt)
for (size_t i = 0; i < psbt->num_outputs; i++) {
asset = wally_tx_output_get_amount(&psbt->tx->outputs[i]);
if (elements_wtx_output_is_fee(psbt->tx, i)) {
fee_output_idx = i;
if (fee_output_idx == psbt->num_outputs) {
fee_output_idx = i;
continue;
}
/* We already have at least one fee output,
* remove this one */
psbt_rm_output(psbt, i--);
continue;
}
if (!amount_asset_is_main(&asset))