BUILD: quic: fix potential NULL dereference on xprt_quic
A warning is triggered by gcc9 on this code path, which is the compiler
version used by ubuntu20.04 on the github CI.
This is linked to github issue #1445.
diff --git a/src/quic_sock.c b/src/quic_sock.c
index a574de0..38a8aab 100644
--- a/src/quic_sock.c
+++ b/src/quic_sock.c
@@ -191,9 +191,9 @@
return;
rxbuf = MT_LIST_POP(&l->rx.rxbuf_list, typeof(rxbuf), mt_list);
- buf = &rxbuf->buf;
- if (!buf)
+ if (!rxbuf)
goto out;
+ buf = &rxbuf->buf;
params = &l->bind_conf->quic_params;
max_sz = params->max_udp_payload_size;