Fix status screen

Firmware/lcd.cpp

@@ -189,7 +189,7 @@ static void lcd_begin(uint8_t clear)
 	#endif
 }
 
-static int lcd_putchar(char c, FILE *)
+static void lcd_putchar(char c, FILE *)
 {
 	lcd_write(c);
 }

Firmware/lcd.h

@@ -11,7 +11,7 @@
 extern FILE _lcdout;
 
 #define lcdout (&_lcdout)
-extern int lcd_putchar(char c, FILE *stream);
+extern void lcd_putchar(char c, FILE *stream);
 
 extern void lcd_init(void);