Solved a bunch of -Wall errors on modern

src/battle_gfx_sfx_util.c

@@ -378,7 +378,7 @@ void SpriteCB_WaitForBattlerBallReleaseAnim(struct Sprite *sprite)
     }
 }
 
-static void UnusedDoBattleSpriteAffineAnim(struct Sprite *sprite, bool8 pointless)
+static void UNUSED UnusedDoBattleSpriteAffineAnim(struct Sprite *sprite, bool8 pointless)
 {
     sprite->animPaused = TRUE;
     sprite->callback = SpriteCallbackDummy;
@@ -690,8 +690,7 @@ void BattleLoadPlayerMonSpriteGfx(struct Pokemon *mon, u8 battlerId)
     }
 }
 
-// Unused
-static void BattleGfxSfxDummy1(void)
+static void UNUSED BattleGfxSfxDummy1(void)
 {
 }