osmo_bsc_sigtran: Fix a SSCP-> SCCP typo in a comment

Change-Id: Iee7e87922f2aa034840993b4bfad3de8defbf5f1
diff --git a/src/osmo-bsc/osmo_bsc_sigtran.c b/src/osmo-bsc/osmo_bsc_sigtran.c
index 08efae4..e4530bf 100644
--- a/src/osmo-bsc/osmo_bsc_sigtran.c
+++ b/src/osmo-bsc/osmo_bsc_sigtran.c
@@ -215,7 +215,7 @@
 	return rc;
 }
 
-/* Callback function, called by the SSCP stack when data arrives */
+/* Callback function, called by the SCCP stack when data arrives */
 static int sccp_sap_up(struct osmo_prim_hdr *oph, void *_scu)
 {
 	struct osmo_scu_prim *scu_prim = (struct osmo_scu_prim *)oph;