[fixed] XnView crashes when loading script

[ckv]

XnView crashes every time when loading script that has non-most-used output format.

Reproduce:

1. Start Batch Processing tool.
2. Select any output format below the separator in the list.
3. Save the script and then load the script you just created.
   = crash!

If you add the format used in the script to most used formats list, XnView doesn't crash.

[XnTriq]

for XnView v1.96.0 & XnConvert v1.20 (see topic “Wish: extract mask channel of PNG”)

[ckv]

Fixed in XnView 1.97 beta.