Fixed nullptr dereference in ItemUse

src/Battling/Flow/TurnHandler.cpp

@@ -368,7 +368,10 @@ void TurnHandler::ExecuteItemChoice(const ArbUt::BorrowedPtr<ItemTurnChoice>& ch
         return;
     }
     auto* script = battle.GetValue()->GetLibrary()->GetScriptResolver()->LoadItemScript(choice->GetItem());
-    auto targetIndex = choice->GetTarget();
+    if (script == nullptr) {
+        return;
+    }
+    const auto& targetIndex = choice->GetTarget();
     ArbUt::OptionalBorrowedPtr<Creature> target = nullptr;
     if (targetIndex.has_value()) {
         target = battle.GetValue()->GetCreature(targetIndex.value());