Play Up sounds instead of Down ones in trade window (bug #3982)

apps/openmw/mwgui/inventorywindow.cpp

@@ -320,7 +320,7 @@ namespace MWGui
     {
         ensureSelectedItemUnequipped(count);
         const ItemStack& item = mTradeModel->getItem(mSelectedItem);
-        std::string sound = item.mBase.getClass().getDownSoundId(item.mBase);
+        std::string sound = item.mBase.getClass().getUpSoundId(item.mBase);
         MWBase::Environment::get().getWindowManager()->playSound(sound);
 
         if (item.mType == ItemStack::Type_Barter)

apps/openmw/mwgui/tradewindow.cpp

@@ -209,7 +209,7 @@ namespace MWGui
     void TradeWindow::sellItem(MyGUI::Widget* sender, int count)
     {
         const ItemStack& item = mTradeModel->getItem(mItemToSell);
-        std::string sound = item.mBase.getClass().getDownSoundId(item.mBase);
+        std::string sound = item.mBase.getClass().getUpSoundId(item.mBase);
         MWBase::Environment::get().getWindowManager()->playSound(sound);
 
         TradeItemModel* playerTradeModel = MWBase::Environment::get().getWindowManager()->getInventoryWindow()->getTradeModel();