fix display of ARRAY fields inside of structure data types.

Previously ARRAY fields in structures were displayed, for example,
like 'ARRAY [1..2] OF ARRAY' instead of 'ARRAY [1..2] OF INT'. Because
of this error the array type can be really edited.

     1

<?xml version="1.0" encoding="UTF-8"?>

     2

<BaseParams Name="canopen" IEC_Channel="0"/>