VirtualBox extension pack installcheck_script question

[homebysix]

Hi @jessepeterson! I noticed that the VirtualBoxExtPack.munki recipe has this in the installcheck_script:

VBM=/usr/local/bin/VBoxManage

if [ ! -f $VBM ]
then
	echo 'VBoxManage not present'
	exit 0
fi

Which indicates that the extension pack should be installed if the VBoxManage binary is not present. However, the same recipe has a postinstall script that includes this:

if [ ! -f $VBM ]
then
	echo 'VBoxManage not present'
	exit 1
fi

This will exit with an error if the same binary is not present.

Because the extension pack payload does not install the VBoxManage binary, wouldn't this result in looping? I think the answer is to change the installcheck_script to exit 1 instead of exit 0 but before I open a PR I wanted to make sure I'm not missing something.