[PATCH] if timeout is set to zero, don't bother drawing the menu

[Robert Millan]

Fixes an ugly result of setting timeout=0.

When this is combined with the "sleep" patch I just sent, user can implement
hiddenmenu-like functionality via scripting:

echo -n "Press `ESC' to enter the menu... "
if sleep -v -i 10 ; then
  set timeout=10
else
  set timeout=0
fi

-- 
Robert Millan

<GPLv2> I know my rights; I want my phone call!
<DRM> What use is a phone call… if you are unable to speak?
(as seen on /.)

zero_timeout.diff
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