Only get active scripts from side if side exists.

src/Battling/Models/ExecutingAttack.hpp

@@ -82,7 +82,7 @@ namespace CreatureLib::Battling {
     protected:
         void GetActiveScripts(std::vector<ScriptWrapper>& scripts) override {
             scripts.emplace_back(&_script);
-            GetUser()->GetActiveScripts(scripts);
+            _user->GetActiveScripts(scripts);
         }
     };
 }