listfunds: add scriptpubkey if it's known.

(Which it is, since 0.7.3).

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Added: JSON: `listfunds` now has a 'scriptpubkey' field.

doc/lightning-listfunds.7

@@ -33,6 +33,8 @@ appended)
 .IP \[bu]
 \fIaddress\fR
 .IP \[bu]
+\fIscriptpubkey\fR (the ScriptPubkey of the output, in hex)
+.IP \[bu]
 \fIstatus\fR (whether \fIunconfirmed\fR, \fIconfirmed\fR, or \fIspent\fR)
 .IP \[bu]
 \fIreserved\fR (whether this is UTXO is currently reserved for an in-flight tx)

doc/lightning-listfunds.7.md

@@ -27,6 +27,7 @@ Each entry in *outputs* will include:
 -   *amount\_msat* (the same as *value*, but in millisatoshi with *msat*
     appended)
 -   *address*
+-   *scriptpubkey* (the ScriptPubkey of the output, in hex)
 -   *status* (whether *unconfirmed*, *confirmed*, or *spent*)
 -   *reserved* (whether this is UTXO is currently reserved for an in-flight tx)
 

wallet/walletrpc.c

@@ -856,6 +856,7 @@ static void json_add_utxo(struct json_stream *response,
 				   "value", "amount_msat");
 
 	if (utxo->scriptPubkey != NULL) {
+		json_add_hex_talarr(response, "scriptpubkey", utxo->scriptPubkey);
 		out = encode_scriptpubkey_to_addr(
 			tmpctx, chainparams,
 			utxo->scriptPubkey);