Make ExecutingAttack use smart pointers.

src/Battling/Library/DamageLibrary.cpp

@@ -30,7 +30,7 @@ float DamageLibrary::GetStatModifier(ExecutingAttack* attack, Creature* target,
                                      const ExecutingAttack::HitData& hitData) const {
     AssertNotNull(attack)
     AssertNotNull(target)
-    auto user = attack->GetUser();
+    auto user = attack->GetUser().GetRaw();
     AssertNotNull(user)
     HOOK(ChangeDamageStatsUser, attack, attack, target, hitIndex, &user);
     Library::Statistic offensiveStat;