[Bugfix] Removed flickering after game item usage

When you use eatable item (such as medkit) with pistol in actor's hands, you can see as used item flickers on the screen. It happens because the game drops used item from actor's inventory before removing it. Such bug seriously affects game experience when hud scheme for usable items (such as 'gwr_eatable.script') is installed.
The fix is hiding dropped item, so you will never see it.

src/xrGame/eatable_item_object.cpp

@@ -60,6 +60,12 @@ void CEatableItemObject::OnH_A_Independent()
 {
     CEatableItem::OnH_A_Independent();
     CPhysicItem::OnH_A_Independent();
+    // If we are dropping used item before removing - don't show it
+    if (!Useful())
+    {
+        setVisible(false);
+        setEnabled(false);
+    }
 }
 
 void CEatableItemObject::OnH_B_Independent(bool just_before_destroy)