SDL_image: IMG_ImageIO: ignore rwops_userdata argument

From 27598221d65f8955e8c3c5d70944306984c5c1be Mon Sep 17 00:00:00 2001
From: Anonymous Maarten <[EMAIL REDACTED]>
Date: Sun, 18 Jun 2023 10:37:26 +0200
Subject: [PATCH] IMG_ImageIO: ignore rwops_userdata argument

---
 src/IMG_ImageIO.m | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/IMG_ImageIO.m b/src/IMG_ImageIO.m
index eba017e1..8581be50 100644
--- a/src/IMG_ImageIO.m
+++ b/src/IMG_ImageIO.m
@@ -45,6 +45,7 @@ static size_t MyProviderGetBytesCallback(void* rwops_userdata, void* quartz_buff
 // so you can clean up any resources.
 static void MyProviderReleaseInfoCallback(void* rwops_userdata)
 {
+    (void)rwops_userdata;
     // What should I put here?
     // I think the user and SDL_RWops controls closing, so I don't do anything.
 }