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gsm/gsm0480.c: prevent NULL-pointer dereference 

Change-Id: I444d95941837458b46e581298f76f3a9926c8552
This commit is contained in:
Vadim Yanitskiy 2018-08-03 03:45:06 +07:00 committed by Harald Welte
parent 893e49e993
commit 3fc4616224
1 changed files with 10 additions and 2 deletions
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12
src/gsm/gsm0480.c
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@ -880,7 +880,11 @@ struct msgb *gsm0480_create_ussd_resp(uint8_t invoke_id, uint8_t trans_id, const
*/
struct msgb *gsm0480_gen_return_error(uint8_t invoke_id, uint8_t error_code)
{
struct msgb *msg = gsm0480_msgb_alloc_name("TS 04.80 ReturnError");
struct msgb *msg;
msg = gsm0480_msgb_alloc_name("TS 04.80 ReturnError");
if (!msg)
return NULL;
/* First insert the problem code */
msgb_push_TLV1(msg, GSM_0480_ERROR_CODE_TAG, error_code);
@ -906,7 +910,11 @@ struct msgb *gsm0480_gen_return_error(uint8_t invoke_id, uint8_t error_code)
*/
struct msgb *gsm0480_gen_reject(int invoke_id, uint8_t problem_tag, uint8_t problem_code)
{
struct msgb *msg = gsm0480_msgb_alloc_name("TS 04.80 Reject");
struct msgb *msg;
msg = gsm0480_msgb_alloc_name("TS 04.80 Reject");
if (!msg)
return NULL;
/* First insert the problem code */
msgb_push_TLV1(msg, problem_tag, problem_code);