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0f54fb1f5f
If the underlying kernel is old PTY resize is disabled and this is
represented by the use of None in the provided Option<File> type. In the
virtio-console PTY path don't blindly unwrap() the value that will be
preserved across a reboot.
Fixes: #3496
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
(cherry picked from commit
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