Bug#948760: berusky2: Compile without warnings

[Bernhard Übelacker]

Hello Asher,
maybe you want to incorporate the changes given here:
   https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=944431#31
Unfortunately I was too late there.

Then the call to e.g. SetThreadPriority would not needed to get
commented out, and the "-O0" fix in #944431 could be removed
again, I guess.

Kind regards,
Bernhard