Fix another memory leak for aura holders and potential crash

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Автор: Warlockbugs


<pre style='white-space:pre-wrap;width:81ex'>Fix another memory leak for aura holders and potential crash</pre>


Подробнее... (https://github.com/cmangos/mangos-wotlk/commit/9b5f1a9379be4c558ba0abbf2d882df893bfab22)