library/IPA_Emulation: assume TRX#0 in ASP_RSL_Unitdata templates

Change-Id: I93297680a2644516870222c2bb8eee03c6b575a9
diff --git a/selftest/Selftest.ttcn b/selftest/Selftest.ttcn
index 263c317..3d74925 100644
--- a/selftest/Selftest.ttcn
+++ b/selftest/Selftest.ttcn
@@ -89,7 +89,7 @@
 	T.timeout;
 
 	for (i := 0; i < 10; i := i+1) {
-		IPA_RSL.receive(tr_ASP_RSL_UD(IPAC_PROTO_RSL_TRX0, rsl));
+		IPA_RSL.receive(tr_ASP_RSL_UD(rsl));
 	}
 	setverdict(pass);
 }