ns2: refactor ns2_prim_status_ind()

Replace parameters nsi + nsei with a single nse pointer.

Change-Id: I35f6381110ba7ba1e013f21120e971362bdff55b
diff --git a/src/gb/gprs_ns2_sns.c b/src/gb/gprs_ns2_sns.c
index 753ac4d..9ffb152 100644
--- a/src/gb/gprs_ns2_sns.c
+++ b/src/gb/gprs_ns2_sns.c
@@ -670,7 +670,7 @@
 	struct ns2_sns_state *gss = (struct ns2_sns_state *) fi->priv;
 
 	if (old_state != GPRS_SNS_ST_UNCONFIGURED)
-		ns2_prim_status_ind(gss->nse->nsi, gss->nse->nsei, 0, NS_AFF_CAUSE_SNS_FAILURE);
+		ns2_prim_status_ind(gss->nse, 0, NS_AFF_CAUSE_SNS_FAILURE);
 
 	if (gss->num_max_ip4_remote > 0)
 		ns2_tx_sns_size(gss->sns_nsvc, true, gss->num_max_nsvcs, gss->num_max_ip4_remote, -1);
@@ -1110,7 +1110,7 @@
 static void ns2_sns_st_configured_onenter(struct osmo_fsm_inst *fi, uint32_t old_state)
 {
 	struct gprs_ns2_nse *nse = nse_inst_from_fi(fi);
-	ns2_prim_status_ind(nse->nsi, nse->nsei, 0, NS_AFF_CAUSE_SNS_CONFIGURED);
+	ns2_prim_status_ind(nse, 0, NS_AFF_CAUSE_SNS_CONFIGURED);
 }
 
 static const struct osmo_fsm_state ns2_sns_bss_states[] = {