SDL_image: Fixed warning building for Xcode

From ecc2aee8244b23ba1ec7058a3ff64a83f0feb77f Mon Sep 17 00:00:00 2001
From: Sam Lantinga <[EMAIL REDACTED]>
Date: Fri, 20 May 2022 10:37:28 -0700
Subject: [PATCH] Fixed warning building for Xcode

---
 IMG_jpg.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/IMG_jpg.c b/IMG_jpg.c
index 0c215a3..7db787e 100644
--- a/IMG_jpg.c
+++ b/IMG_jpg.c
@@ -683,6 +683,7 @@ SDL_Surface *IMG_LoadJPG_RW(SDL_RWops *src)
 #if SDL_IMAGE_SAVE_JPG && (defined(LOAD_JPG_DYNAMIC) || !defined(WANT_JPEGLIB))
 
 #define assert SDL_assert
+#undef memcpy
 #define memcpy SDL_memcpy
 
 #define ceilf SDL_ceilf