typo fix after 1a6a23e

src/server/game/Entities/Player/Player.cpp

@@ -16168,7 +16168,7 @@ void Player::KilledMonsterCredit(uint32 entry, uint64 guid)
     Creature* killed = NULL;
     if (guid)
     {
-        Creature* killed = GetMap()->GetCreature(guid);
+        killed = GetMap()->GetCreature(guid);
         if (killed && killed->GetEntry())
             real_entry = killed->GetEntry();
     }