From 3b8c7b6fff9a64842b1502bfe1534d05e4bd1cb4 Mon Sep 17 00:00:00 2001
From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Sat, 23 Nov 2019 14:11:37 +0000
Subject: [PATCH] rsa: rsapub_dispose: Make passing 0 OK

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>
---
 rsa.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/rsa.c b/rsa.c
index 7af7296..48ce710 100644
--- a/rsa.c
+++ b/rsa.c
@@ -319,6 +319,7 @@ static bool_t rsa_sig_check(void *sst, uint8_t *data, int32_t datalen,
 static void rsapub_dispose(void *sst) {
     struct rsapub *st=sst;
 
+    if (!st) return;
     mpz_clear(&st->e);
     mpz_clear(&st->n);
     rsacommon_dispose(&st->common);
-- 
2.30.2