bsc: move as_Media arg fail_on_dlcx to pars

Prepare to use fail_on_dlcx in a new test case. Instead of dragging the
parameter through lots of function calls, just add it to pars.

Related: OS#5787
Change-Id: I6f0c4ce543724cc6f18bae9fc2b480f5818db8b7
diff --git a/bsc/BSC_Tests.ttcn b/bsc/BSC_Tests.ttcn
index 96428ff..352a12e 100644
--- a/bsc/BSC_Tests.ttcn
+++ b/bsc/BSC_Tests.ttcn
@@ -6878,7 +6878,7 @@
 
 	f_create_mgcp_expect(ExpectCriteria:{omit,omit,omit});
 	f_MscConnHdlr_init(g_pars.media_nr, "127.0.0.2", "127.0.0.3", FR_AMR);
-	activate(as_Media(fail_on_dlcx := false));
+	activate(as_Media());
 
 	BSSAP.send(ts_BSSAP_Conn_Req(g_pars.sccp_addr_bsc, g_pars.sccp_addr_msc,
 				     f_gen_handover_req()));
@@ -6968,7 +6968,7 @@
 
 	f_create_mgcp_expect(ExpectCriteria:{omit,omit,omit});
 	f_MscConnHdlr_init(g_pars.media_nr, "127.0.0.2", "127.0.0.3", FR_AMR);
-	activate(as_Media(fail_on_dlcx := false));
+	activate(as_Media());
 
 	BSSAP.send(ts_BSSAP_Conn_Req(g_pars.sccp_addr_bsc, g_pars.sccp_addr_msc,
 				     f_gen_handover_req()));
@@ -7022,6 +7022,8 @@
 	var MSC_ConnHdlr vc_conn;
 	var TestHdlrParams pars := f_gen_test_hdlr_pars();
 
+	pars.fail_on_dlcx := false;
+
 	f_init(1, true);
 	f_sleep(1.0);
 
@@ -11556,7 +11558,7 @@
 	/* we should now have a COMPL_L3 at the MSC */
 
 	f_create_mgcp_expect(ExpectCriteria:{omit,omit,omit});
-	activate(as_Media_mgw(fail_on_dlcx := false));
+	activate(as_Media_mgw());
 
 	var RslChannelNr chan_nr := { u := { ch0 := RSL_CHAN_NR_Bm_ACCH }, tn := 1 };
 	f_rslem_register(0, chan_nr);
@@ -11604,6 +11606,8 @@
 	var TestHdlrParams pars := f_gen_test_hdlr_pars();
 	var MSC_ConnHdlr vc_conn;
 
+	pars.fail_on_dlcx := false;
+
 	f_init(1, true);
 	f_sleep(1.0);