Fix warning about intro data type in setup files

src/files/setup/setupark.c

@@ -77,7 +77,7 @@
 #define AILIST_DEFEND_PAD         0x0413
 #define AILIST_INIT_SHOCK         0x0414
 
-u8 intro[];
+s32 intro[];
 u8 props[];
 struct path paths[];
 struct ailist ailists[];
@@ -470,7 +470,7 @@ u8 props[] = {
 	endprops
 };
 
-u8 intro[] = {
+s32 intro[] = {
 	intro_weapon(WEAPON_FALCON2_SCOPE, -1)
 	ammo(AMMOTYPE_PISTOL, 50)
 	ammo(AMMOTYPE_RIFLE, 160)