Fix Berries that were broken after Bug Bite fix

Issue #2448 
Haven't tested extensively, but regular Berries work and Bug Bite w/ Berries also works.
I believe this line was missing by accident (you can look at the merged Bug Bite PR #2433 to see that this line was deleted and never replaced).

src/battle_util.c

@@ -7407,6 +7407,7 @@ u8 ItemBattleEffects(u8 caseID, u8 battlerId, bool8 moveTurn)
     case ITEMEFFECT_MOVE_END:
         for (battlerId = 0; battlerId < gBattlersCount; battlerId++)
         {
+            gLastUsedItem = gBattleMons[battlerId].item;
             effect = ItemEffectMoveEnd(battlerId, GetBattlerHoldEffect(battlerId, TRUE));
             if (effect)
             {