From e831aad6d48874abab6efa37d4460da2be3ac765 Mon Sep 17 00:00:00 2001
From: Marsman1996 <lqliuyuwei@outlook.com>
Date: Wed, 1 Mar 2023 14:48:48 +0800
Subject: [PATCH] dlt_jnpr_ether_cleanup: check subctx before cleanup

---
 src/tcpedit/plugins/dlt_jnpr_ether/jnpr_ether.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/tcpedit/plugins/dlt_jnpr_ether/jnpr_ether.c b/src/tcpedit/plugins/dlt_jnpr_ether/jnpr_ether.c
index e282ef48..98b67e9c 100644
--- a/src/tcpedit/plugins/dlt_jnpr_ether/jnpr_ether.c
+++ b/src/tcpedit/plugins/dlt_jnpr_ether/jnpr_ether.c
@@ -168,7 +168,8 @@ dlt_jnpr_ether_cleanup(tcpeditdlt_t *ctx)
         jnpr_ether_config_t *config;
 
         config = (jnpr_ether_config_t *)ctx->encoder->config;
-        tcpedit_dlt_cleanup(config->subctx);
+        if (config->subctx != NULL)
+            tcpedit_dlt_cleanup(config->subctx);
         safe_free(plugin->config);
         plugin->config = NULL;
         plugin->config_size = 0;