Solved a bunch of -Wall errors on modern

src/battle_anim_bug.c

@@ -443,7 +443,7 @@ static void AnimMissileArc_Step(struct Sprite *sprite)
     else
     {
         s16 tempData[8];
-        u16 *data = sprite->data;
+        s16 *data = sprite->data;
         u16 x1 = sprite->x;
         s16 x2 = sprite->x2;
         u16 y1 = sprite->y;