smpp: fix return cause
Return cause 38 when default SMPP route is unavailable. This
is better than cause 1.
Change-Id: If3241d50a78fa611981e55fef6ae4c72b0a2a167
diff --git a/src/libmsc/gsm_04_11.c b/src/libmsc/gsm_04_11.c
index bdf2ad7..6c6a1fb 100644
--- a/src/libmsc/gsm_04_11.c
+++ b/src/libmsc/gsm_04_11.c
@@ -296,6 +296,7 @@
if (smpp_first) {
rc = smpp_try_deliver(gsms, conn, deferred);
if (rc == GSM411_RP_CAUSE_MO_NUM_UNASSIGNED)
+ /* unknown subscriber, try local */
goto try_local;
if (rc < 0) {
LOGP(DLSMS, LOGL_ERROR, "%s: SMS delivery error: %d.",