ensure active menuitem is inside menu

Hi,

setting active menuitem currently can be outside of menu which results in invisible selection

attached Patch fixes this

regards Frank

>From 1d9c4cb8b3e2dd9b0a7a6a2d4a21684d0a099dbf Mon Sep 17 00:00:00 2001
From: Frank Wunderlich <frank-w@public-files.de>
Date: Sun, 2 Dec 2018 11:23:53 +0100
Subject: [PATCH] ensure active menuitem is inside menu

if active menuitem is defined via environment var it can be outside the menu (>=menuitem-count)

this patch resets this definition back to 0

Signed-off-by: Frank Wunderlich <frank-w@public-files.de>