Fixes flung items sometimes being blocked by Unnerve (#8114)

src/battle_hold_effects.c

@@ -1067,7 +1067,12 @@ static enum ItemEffect TrySetMicleBerry(u32 battler, u32 itemId, ActivationTimin
 enum ItemEffect ItemBattleEffects(u32 itemBattler, u32 battler, enum HoldEffect holdEffect, ActivationTiming timing)
 {
     enum ItemEffect effect = ITEM_NO_EFFECT;
-    u32 item = (timing == IsOnBerryActivation) ? gLastUsedItem : gBattleMons[itemBattler].item;
+    u32 item;
+
+    if (timing == IsOnBerryActivation || timing == IsOnFlingActivation)
+        item = gLastUsedItem;
+    else
+        item = gBattleMons[itemBattler].item;
 
     if (holdEffect == HOLD_EFFECT_NONE
      || !timing(holdEffect)

test/battle/move_effect/fling.c

@@ -153,6 +153,23 @@ SINGLE_BATTLE_TEST("Fling - Item is lost when target protects itself")
     }
 }
 
+SINGLE_BATTLE_TEST("Fling - Item does not get blocked by Unnerve if it isn't a berry")
+{
+    GIVEN {
+        ASSUME(GetMoveEffect(MOVE_TAUNT) == EFFECT_TAUNT);
+        PLAYER(SPECIES_CALYREX) { Item(ITEM_MENTAL_HERB); Ability(ABILITY_UNNERVE); }
+        OPPONENT(SPECIES_WOBBUFFET) { Item(ITEM_ORAN_BERRY); }
+    } WHEN {
+        TURN { MOVE(player, MOVE_TAUNT); MOVE(opponent, MOVE_SCRATCH); }
+        TURN { MOVE(player, MOVE_FLING); MOVE(opponent, MOVE_SCRATCH); }
+    } SCENE {
+        ANIMATION(ANIM_TYPE_MOVE, MOVE_TAUNT, player);
+        ANIMATION(ANIM_TYPE_MOVE, MOVE_FLING, player);
+        HP_BAR(opponent);
+        MESSAGE("The opposing Wobbuffet's Taunt wore off!");
+    }
+}
+
 SINGLE_BATTLE_TEST("Fling doesn't consume the item if Pokémon is asleep/frozen/paralyzed")
 {
     u32 status;