[AMF] Fixed MEMORY LEAK (#1925)

src/amf/nas-path.c

@@ -659,6 +659,7 @@ int nas_send_pdu_session_release_command(amf_sess_t *sess,
         rv = nas_5gs_send_to_gnb(amf_ue, ngapbuf);
         ogs_expect(rv == OGS_OK);
     } else if (gmmbuf) {
+        ogs_pkbuf_free(n2smbuf);
         ngapbuf = ngap_build_downlink_nas_transport(
                 ran_ue, gmmbuf, false, false);
         if (!ngapbuf) {

tests/registration/multi-ue-test.c

@@ -58,6 +58,7 @@ static void test1_func(abts_case *tc, void *data)
     /* Receive NG-Setup Response */
     recvbuf = testgnb_ngap_read(ngap);
     ABTS_PTR_NOTNULL(tc, recvbuf);
+    ogs_pkbuf_free(recvbuf);
 
     for (i = 0; i < NUM_OF_TEST_UE; i++) {
         const char *scheme_output[] = {