From 2632cddfe46bc35f76796ff1c1154b82a6870cef Mon Sep 17 00:00:00 2001
From: Christian Decker <decker.christian@gmail.com>
Date: Tue, 5 Jul 2022 12:10:41 +0200
Subject: [PATCH] pay: Fix a memory leak when retrying getroute

---
 plugins/libplugin-pay.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/plugins/libplugin-pay.c b/plugins/libplugin-pay.c
index e27305fa9..b44716d7a 100644
--- a/plugins/libplugin-pay.c
+++ b/plugins/libplugin-pay.c
@@ -809,6 +809,10 @@ static struct command_result *payment_getroute(struct payment *p)
 	const char *errstr;
 	struct gossmap *gossmap;
 
+	/* If we retry the getroute call we might already have a route, so
+	 * free an eventual stale route. */
+	p->route = tal_free(p->route);
+
 	gossmap = get_gossmap(p->plugin);
 
 	dst = gossmap_find_node(gossmap, p->getroute->destination);