Fix various compiler warnings all over the code
diff --git a/openbsc/include/openbsc/vty.h b/openbsc/include/openbsc/vty.h
index 8c38313..6ed5f05 100644
--- a/openbsc/include/openbsc/vty.h
+++ b/openbsc/include/openbsc/vty.h
@@ -39,4 +39,7 @@
 extern int bsc_vty_is_config_node(struct vty *vty, int node);
 extern void bsc_replace_string(void *ctx, char **dst, const char *newstr);
 
+int bsc_vty_init(void);
+int bsc_vty_init_extra(void);
+
 #endif