show active extruder: numbers corrected

Firmware/ultralcd.cpp

@@ -530,9 +530,9 @@ void lcdui_print_extruder(void)
 {
 	int chars = 0;
 	if (mmu_extruder == tmp_extruder)
-		chars = lcd_printf_P(_N(" T%u"), mmu_extruder);
+		chars = lcd_printf_P(_N(" T%u"), mmu_extruder+1);
 	else
-		chars = lcd_printf_P(_N(" %u>%u"), mmu_extruder, tmp_extruder);
+		chars = lcd_printf_P(_N(" %u>%u"), mmu_extruder+1, tmp_extruder+1);
 	lcd_space(5 - chars);
 }