Unblock vzctl (again)

[Ola Lundqvist <ola@inguza.com>]

Hi

I would like vzctl to be unblocked again. I have corrected
one more bashism. I'm sorry that I did not look though the bug
list enough before my last upload.

New version of vzctl is 3.0.22-13
It corrects a bashism as reported in #499250 bashism in vznetcfg

Thanks in advance,

// Ola

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