From d03c6390c8d88c9915f74e030b9875f441e38059 Mon Sep 17 00:00:00 2001
From: Benjamin Valentin <benjamin.valentin@ml-pa.com>
Date: Tue, 3 May 2022 03:49:37 +0200
Subject: [PATCH] nanocoap_sock: release rx buffer on RESET

We must not return without calling sock_udp_recv_buf() again.
---
 sys/net/application_layer/nanocoap/sock.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sys/net/application_layer/nanocoap/sock.c b/sys/net/application_layer/nanocoap/sock.c
index 2132fa9e57..3d48d4acac 100644
--- a/sys/net/application_layer/nanocoap/sock.c
+++ b/sys/net/application_layer/nanocoap/sock.c
@@ -220,7 +220,8 @@ ssize_t nanocoap_sock_request_cb(nanocoap_sock_t *sock, coap_pkt_t *pkt,
             switch (coap_get_type(pkt)) {
             case COAP_TYPE_RST:
                 /* TODO: handle different? */
-                return -EBADMSG;
+                res = -EBADMSG;
+                break;
             case COAP_TYPE_CON:
                 _send_ack(sock, pkt);
                 /* fall-through */