db: add helper for db_col_psbt

We had db_bind_psbt; this is the missing symmetric response to that

wallet/db.c

@@ -1647,12 +1647,16 @@ struct bitcoin_tx *db_column_tx(const tal_t *ctx, struct db_stmt *stmt, int col)
 	return pull_bitcoin_tx(ctx, &src, &len);
 }
 
-struct bitcoin_tx *db_column_psbt_to_tx(const tal_t *ctx, struct db_stmt *stmt, int col)
+struct wally_psbt *db_column_psbt(const tal_t *ctx, struct db_stmt *stmt, int col)
 {
-	struct wally_psbt *psbt;
 	const u8 *src = db_column_blob(stmt, col);
 	size_t len = db_column_bytes(stmt, col);
-	psbt = psbt_from_bytes(ctx, src, len);
+	return psbt_from_bytes(ctx, src, len);
+}
+
+struct bitcoin_tx *db_column_psbt_to_tx(const tal_t *ctx, struct db_stmt *stmt, int col)
+{
+	struct wally_psbt *psbt = db_column_psbt(ctx, stmt, col);
 	if (!psbt)
 		return NULL;
 	return bitcoin_tx_with_psbt(ctx, psbt);

wallet/db.h

@@ -24,6 +24,7 @@ struct onionreply;
 struct db_stmt;
 struct db;
 struct wally_psbt;
+struct wally_tx;
 
 /**
  * Macro to annotate a named SQL query.
@@ -162,6 +163,7 @@ bool db_column_signature(struct db_stmt *stmt, int col,
 			 secp256k1_ecdsa_signature *sig);
 struct timeabs db_column_timeabs(struct db_stmt *stmt, int col);
 struct bitcoin_tx *db_column_tx(const tal_t *ctx, struct db_stmt *stmt, int col);
+struct wally_psbt *db_column_psbt(const tal_t *ctx, struct db_stmt *stmt, int col);
 struct bitcoin_tx *db_column_psbt_to_tx(const tal_t *ctx, struct db_stmt *stmt, int col);
 
 struct onionreply *db_column_onionreply(const tal_t *ctx,

wallet/db_postgres_sqlgen.c

@@ -1654,4 +1654,4 @@ struct db_query db_postgres_queries[] = {
 
 #endif /* LIGHTNINGD_WALLET_GEN_DB_POSTGRES */
 
-// SHA256STAMP:b58d5903df88487b84515e511c1cd98e5fb15f86cf9676e3125ab56a27c27877
+// SHA256STAMP:e395834264c88a46c76e9e19347340507d615ad7902ddb5e179f253db7dc55e7

wallet/db_sqlite3_sqlgen.c

@@ -1654,4 +1654,4 @@ struct db_query db_sqlite3_queries[] = {
 
 #endif /* LIGHTNINGD_WALLET_GEN_DB_SQLITE3 */
 
-// SHA256STAMP:b58d5903df88487b84515e511c1cd98e5fb15f86cf9676e3125ab56a27c27877
+// SHA256STAMP:e395834264c88a46c76e9e19347340507d615ad7902ddb5e179f253db7dc55e7

wallet/statements_gettextgen.po

@@ -1089,4 +1089,4 @@ msgstr ""
 #: wallet/test/run-wallet.c:1359
 msgid "INSERT INTO channels (id) VALUES (1);"
 msgstr ""
-#  SHA256STAMP:b5142a6c1570a9fdf0745214134e54ff79e3d91408a91a1555cdb0a546fb0c7b
+#  SHA256STAMP:06772e06eea0d31f3172982d9a4fac7326f8ce39868ff405fd4e7babe923f17c