Fix Ptr/ConstPtr userdata mismatch (Bug #3784)

apps/openmw/mwgui/merchantrepair.cpp

@@ -44,10 +44,9 @@ void MerchantRepair::startRepair(const MWWorld::Ptr &actor)
     MWWorld::Ptr player = MWMechanics::getPlayer();
     int playerGold = player.getClass().getContainerStore(player).count(MWWorld::ContainerStore::sGoldId);
 
-    const MWWorld::ContainerStore& store = player.getClass().getContainerStore(player);
+    MWWorld::ContainerStore& store = player.getClass().getContainerStore(player);
     int categories = MWWorld::ContainerStore::Type_Weapon | MWWorld::ContainerStore::Type_Armor;
-    for (MWWorld::ConstContainerStoreIterator iter (store.cbegin(categories));
+    for (MWWorld::ContainerStoreIterator iter (store.begin(categories)); iter!=store.end(); ++iter)
-         iter!=store.cend(); ++iter)
     {
         if (iter->getClass().hasItemHealth(*iter))
         {