vzctl set: fix exit code in case of invalid veth params

Return code from check_veth_param() is used as vzctl exit code:

main()
  run_action()
    set()
      check_veth_param()

So do return VZ_INVALID_PARAMETER_SYNTAX instead of -1.

Signed-off-by: Kir Kolyshkin <kir@openvz.org>
1 file changed