bsc: Start the timer at the beginning of f_init

This avoids a possible indefinite timeout if osmo-bsc crashes during the
test.

Ticket: OS#3713

Change-Id: I88f6254d9d2d90ab49a3c3d8255af25ca6ffe624
diff --git a/bsc/BSC_Tests.ttcn b/bsc/BSC_Tests.ttcn
index 53e4396..962d6c6 100644
--- a/bsc/BSC_Tests.ttcn
+++ b/bsc/BSC_Tests.ttcn
@@ -310,6 +310,9 @@
 	}
 	g_initialized := true;
 
+	T_guard.start;
+	activate(as_Tguard());
+
 	/* Call a function of our 'parent component' BSSAP_Adapter_CT to start the
 	 * MSC-side BSSAP emulation */
 	if (handler_mode) {
@@ -336,8 +339,6 @@
 		f_wait_oml(i, "connected", 5.0);
 	}
 
-	T_guard.start;
-	activate(as_Tguard());
 }
 
 /* expect to receive a RSL message matching a specified template on a given BTS / stream */