From 48200f3e9ca9f5e5a05de440eefc23f7265b5268 Mon Sep 17 00:00:00 2001
From: Daniel-Constantin Mierla <miconda@gmail.com>
Date: Wed, 28 Apr 2021 15:57:05 +0200
Subject: [PATCH] textops: check for msg headers field in case is used for
 non-sip traffic

---
 src/modules/textops/textops.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/modules/textops/textops.c b/src/modules/textops/textops.c
index 3d90e97a900..29989060519 100644
--- a/src/modules/textops/textops.c
+++ b/src/modules/textops/textops.c
@@ -3401,7 +3401,7 @@ int add_hf_helper(struct sip_msg* msg, str *str1, str *str2,
 	int len;
 	str s0;
 
-	if (parse_headers(msg, HDR_EOH_F, 0) == -1) {
+	if ((parse_headers(msg, HDR_EOH_F, 0) == -1) || (msg->headers == NULL)) {
 		LM_ERR("error while parsing message\n");
 		return -1;
 	}