Bug#990368: Official patch

[tux supertuxkart]

Hello
I think the quickest way to solve this issue is to remove beastie and
hexley in debian:

So please apply those 2 patches:

https://github.com/supertuxkart/stk-code/commit/851290d4c866130abb22ee61114016378af4cb45
https://github.com/supertuxkart/stk-code/commit/cae38e862a1dbc1486283f551ee023e6c2255085

As seen in https://github.com/supertuxkart/stk-code/commits/1.2

Those patches have been fully tested and should be ok for production usage,
then you can remove those karts in supertuxkart-data (assets)

STK team