added missing declaration of buttons_init()

This is required when moving the buttons_init() function to the
lcd_init() function

diff --git a/Marlin/ultralcd.h b/Marlin/ultralcd.h
index 39d262222e35297709edd3e5ca13af7f548f71cc..ab5675d598d7afd6595c70bb61c3d549a98626aa 100644 (file)
--- a/Marlin/ultralcd.h
+++ b/Marlin/ultralcd.h
@@ -7,6 +7,7 @@
   void lcd_init();
   void lcd_status(const char* message);
   void beep();
+  void buttons_init();
   void buttons_check();
 
   #define LCD_UPDATE_INTERVAL 100