nat: Use bsc_nat_msc_is_connected instead of accessing it directly
diff --git a/openbsc/src/osmo-bsc_nat/bsc_nat_vty.c b/openbsc/src/osmo-bsc_nat/bsc_nat_vty.c
index 36a46f2..b2ec156 100644
--- a/openbsc/src/osmo-bsc_nat/bsc_nat_vty.c
+++ b/openbsc/src/osmo-bsc_nat/bsc_nat_vty.c
@@ -290,7 +290,7 @@
 	vty_out(vty, " MSC Connections %lu%s",
 		osmo_counter_get(nat->stats.msc.reconn), VTY_NEWLINE);
 	vty_out(vty, " MSC Connected: %d%s",
-		nat->msc_con->is_connected, VTY_NEWLINE);
+		bsc_nat_msc_is_connected(nat), VTY_NEWLINE);
 	vty_out(vty, " BSC Connections %lu total, %lu auth failed.%s",
 		osmo_counter_get(nat->stats.bsc.reconn),
 		osmo_counter_get(nat->stats.bsc.auth_fail), VTY_NEWLINE);
@@ -371,7 +371,7 @@
 	}
 
 	vty_out(vty, "MSC is connected: %d%s",
-		_nat->msc_con->is_connected, VTY_NEWLINE);
+		bsc_nat_msc_is_connected(_nat), VTY_NEWLINE);
 	return CMD_SUCCESS;
 }