bsc: Fix race condition exiting f_ho_out_of_this_bsc

The function didn't wait to receive the 2 messages from the BSC. As a
result, they may have arrived while tearing down the test components
shortly after exiting the function and provoke a Dynamic Test Error
while pushing the messages up the stack since some of the stack layers
may already be unavailable.

Test TC_ho_out_of_this_bsc() workarounded this by using a f_sleep(1),
but TC_srvcc_eutran_to_geran_ho_out() didn't, making it fail sometimes.

Change-Id: I590b09353900dfe6c4f648812ab675fed1908589
diff --git a/bsc/BSC_Tests.ttcn b/bsc/BSC_Tests.ttcn
index 41deea1..074fa60 100644
--- a/bsc/BSC_Tests.ttcn
+++ b/bsc/BSC_Tests.ttcn
@@ -4858,6 +4858,12 @@
 	BSSAP.send(ts_BSSMAP_ClearCommand(cause));
 
 	f_expect_dlcx_conns();
+
+	interleave {
+	[] RSL.receive(tr_RSL_DATA_REQ(g_chan_nr, ?, decmatch tr_RRM_RR_RELEASE));
+	[] RSL.receive(tr_RSL_DEACT_SACCH(g_chan_nr));
+	[] RSL.receive(tr_RSL_RF_CHAN_REL(g_chan_nr));
+	}
 	setverdict(pass);
 }
 
@@ -4870,7 +4876,6 @@
 	f_establish_fully(ass_req, exp_compl);
 
 	f_ho_out_of_this_bsc();
-	f_sleep(1.0);
 }
 testcase TC_ho_out_of_this_bsc() runs on test_CT {
 	var MSC_ConnHdlr vc_conn;