[1.31.1] Bug: DestroyMultiboard causes crash after disabling letterbox

[AbsolutePsycho]

Found this bug while fixing the good old RotD campaign.

1. Create some multiboard.
2. Destroy it:

call DestroyMultiboard(mb)

2. Enable letterbox mode
3. Disable letterbox mode. As soon as the interface is fully shown, the game will crash. It probably tries to display the non-existent multiboard.

Uploaded the example map for demonstration.
Tested this in 1.30.4 - the game does crash
Tested this in 1.26 - the game does NOT crash

It can be avoided, if you hide multiboard before destroying it:

call MultiboardDisplay(mb, false) 
call DestroyMultiboard(mb)

Nonetheless, it needs to be fixed, as it didn't happen in older versions.

 

[AbsolutePsycho]

This bug is still present in 1.31.1.