uno2iec freezes if strange chars in filenames

Hi,

it seems that uno2iec freezes (on RPi 2) if strange chars are in filenames. Have a look at the Novaterm 9.6c examples:

http://i.imgur.com/y1BNsDT.jpg
and
http://i.imgur.com/oVSVLOL.jpg

I had a look at the source codes (RPi and Qt). I didn't found the place where both creates the names. Can we patch this issue?
