gsup_client_mux: set destination_name in error reply function
If the GSUP request message to which we are replying is an MT SMS
delivery from an SMSC relayed via OsmoHLR, we must set destination_name
in our reply - otherwise our reply won't make it back to the SMSC.
Related: OS#6135
Change-Id: I892fe87a733a78ed9d5761a8ce238caa135dea1e
diff --git a/src/libmsc/gsup_client_mux.c b/src/libmsc/gsup_client_mux.c
index 1900377..9a0dc16 100644
--- a/src/libmsc/gsup_client_mux.c
+++ b/src/libmsc/gsup_client_mux.c
@@ -150,6 +150,8 @@
.cause = cause,
.message_type = OSMO_GSUP_TO_MSGT_ERROR(gsup_orig->message_type),
.message_class = gsup_orig->message_class,
+ .destination_name = gsup_orig->source_name,
+ .destination_name_len = gsup_orig->source_name_len,
/* RP-Message-Reference is mandatory for SM Service */
.sm_rp_mr = gsup_orig->sm_rp_mr,