msc: allow another reject cause in TC_cm_reest_req_reject

osmo-msc will soon have CM Re-Establishing support, and it will start
returning a different reject code instead of
GSM48_REJECT_SRV_OPT_NOT_SUPPORTED. In TC_cm_reest_req_reject, there is
no previous ongoing connection let alone a voice call, so osmo-msc will
return GSM48_REJECT_CALL_CAN_NOT_BE_IDENTIFIED.

Related: SYS#5130
Change-Id: I3eebab2b26016fb0ef7bf958208eaba6ae4c7836
diff --git a/msc/MSC_Tests.ttcn b/msc/MSC_Tests.ttcn
index 740d396..d63e5fc 100644
--- a/msc/MSC_Tests.ttcn
+++ b/msc/MSC_Tests.ttcn
@@ -1403,7 +1403,9 @@
 	var MobileIdentityLV mi := valueof(ts_MI_IMSI_LV(g_pars.imsi));
 	var PDU_ML3_MS_NW l3_info := valueof(ts_CM_REEST_REQ(0, mi));
 	f_cl3_or_initial_ue(l3_info);
-	BSSAP.receive(tr_PDU_DTAP_MT(tr_CM_SERV_REJ(int2oct(32,1))));
+	/* Older osmo-msc returns: GSM48_REJECT_SRV_OPT_NOT_SUPPORTED = 32,
+	 * newer osmo-msc with CM Re-Establish support returns: GSM48_REJECT_CALL_CAN_NOT_BE_IDENTIFIED	= 38 */
+	BSSAP.receive(tr_PDU_DTAP_MT(tr_CM_SERV_REJ( (int2oct(32,1), int2oct(38,1)) )));
 	f_expect_clear();
 }
 testcase TC_cm_reest_req_reject() runs on MTC_CT {