make two functions static

Change-Id: I1de0f35f1606c997777f34bbf4033e069aadbc64
diff --git a/src/libmsc/gsm_04_08_cc.c b/src/libmsc/gsm_04_08_cc.c
index 5908db9..6148bbd 100644
--- a/src/libmsc/gsm_04_08_cc.c
+++ b/src/libmsc/gsm_04_08_cc.c
@@ -129,7 +129,7 @@
 
 /* Call Control */
 
-void cc_tx_to_mncc(struct gsm_network *net, struct msgb *msg)
+static void cc_tx_to_mncc(struct gsm_network *net, struct msgb *msg)
 {
 	net->mncc_recv(net, msg);
 }
diff --git a/src/osmo-msc/msc_main.c b/src/osmo-msc/msc_main.c
index 9808e86..913bd21 100644
--- a/src/osmo-msc/msc_main.c
+++ b/src/osmo-msc/msc_main.c
@@ -242,8 +242,8 @@
 	}
 }
 
-struct gsm_network *msc_network_alloc(void *ctx,
-				      mncc_recv_cb_t mncc_recv)
+static struct gsm_network *msc_network_alloc(void *ctx,
+					     mncc_recv_cb_t mncc_recv)
 {
 	struct gsm_network *net = gsm_network_init(ctx, mncc_recv);
 	if (!net)