[PlayerBot] Fix targets being initalised by integers instead of nullptr

[newsbot]

Автор: cala


<pre style='white-space:pre-wrap;width:81ex'>[PlayerBot] Fix targets being initalised by integers instead of nullptr</pre>


Подробнее... (https://github.com/cmangos/mangos-wotlk/commit/18b5072f084939cf7ccfef5cf40e6c871be3575e)