Invalid tree path (discovered on windows vm)

[TwoWheelDev]

Traceback (most recent call last):
  File "./src/OXM/window.py", line 1181, in on_tabbox_focus_tab
    self.update_tab_host_nics()
  File "./src/OXM/window_host.py", line 356, in update_tab_host_nics
    iter = listhostnics.get_iter((0, ))
ValueError: invalid tree path