vty api: add vty_out_va()
Provide a va_list type vty_out() variant, to be able to pass on variable
arguments from other function signatures to vty_out().
This will be used by Ibd6b1ed7f1bd6e1f2e0fde53352055a4468f23e5 for osmo_tdef.
Change-Id: Ie6e6f11a6b794f3cb686350c1ed678e4d5bbbb75
diff --git a/include/osmocom/vty/vty.h b/include/osmocom/vty/vty.h
index c4cf707..8d2e1b3 100644
--- a/include/osmocom/vty/vty.h
+++ b/include/osmocom/vty/vty.h
@@ -193,6 +193,7 @@
struct vty *vty_new (void);
struct vty *vty_create (int vty_sock, void *priv);
int vty_out (struct vty *, const char *, ...) VTY_PRINTF_ATTRIBUTE(2, 3);
+int vty_out_va(struct vty *vty, const char *format, va_list ap);
int vty_out_newline(struct vty *);
int vty_read(struct vty *vty);
//void vty_time_print (struct vty *, int);