rpc: document bools in FillPSBT() calls

src/wallet/rpc/spend.cpp

@@ -82,10 +82,10 @@ static UniValue FinishTransaction(const std::shared_ptr<CWallet> pwallet, const
     PartiallySignedTransaction psbtx(rawTx);
 
     // First fill transaction with our data without signing,
-    // so external signers are not asked sign more than once.
+    // so external signers are not asked to sign more than once.
     bool complete;
-    pwallet->FillPSBT(psbtx, complete, SIGHASH_DEFAULT, false, true);
-    const TransactionError err{pwallet->FillPSBT(psbtx, complete, SIGHASH_DEFAULT, true, false)};
+    pwallet->FillPSBT(psbtx, complete, SIGHASH_DEFAULT, /*sign=*/false, /*bip32derivs=*/true);
+    const TransactionError err{pwallet->FillPSBT(psbtx, complete, SIGHASH_DEFAULT, /*sign=*/true, /*bip32derivs=*/false)};
     if (err != TransactionError::OK) {
         throw JSONRPCTransactionError(err);
     }
@@ -1100,7 +1100,7 @@ static RPCHelpMan bumpfee_helper(std::string method_name)
     } else {
         PartiallySignedTransaction psbtx(mtx);
         bool complete = false;
-        const TransactionError err = pwallet->FillPSBT(psbtx, complete, SIGHASH_DEFAULT, false /* sign */, true /* bip32derivs */);
+        const TransactionError err = pwallet->FillPSBT(psbtx, complete, SIGHASH_DEFAULT, /*sign=*/false, /*bip32derivs=*/true);
         CHECK_NONFATAL(err == TransactionError::OK);
         CHECK_NONFATAL(!complete);
         CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION);
@@ -1675,7 +1675,7 @@ RPCHelpMan walletcreatefundedpsbt()
     // Fill transaction with out data but don't sign
     bool bip32derivs = request.params[4].isNull() ? true : request.params[4].get_bool();
     bool complete = true;
-    const TransactionError err{wallet.FillPSBT(psbtx, complete, 1, false, bip32derivs)};
+    const TransactionError err{wallet.FillPSBT(psbtx, complete, 1, /*sign=*/false, /*bip32derivs=*/bip32derivs)};
     if (err != TransactionError::OK) {
         throw JSONRPCTransactionError(err);
     }