SDL_image: gif: Don't import internal function IMG_LoadGIF_RW_Internal

From 704e516ad5e75a602ddfa5e41d6a237cbac43d00 Mon Sep 17 00:00:00 2001
From: Simon McVittie <[EMAIL REDACTED]>
Date: Tue, 14 Dec 2021 18:08:46 +0000
Subject: [PATCH] gif: Don't import internal function IMG_LoadGIF_RW_Internal

This isn't mentioned in the header file and it returns a type that
callers cannot understand without knowing internal implementation
details, so I assume it was meant to be private to SDL_image.

Signed-off-by: Simon McVittie <smcv@debian.org>
---
 IMG_gif.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/IMG_gif.c b/IMG_gif.c
index 9331eee..5c038c9 100644
--- a/IMG_gif.c
+++ b/IMG_gif.c
@@ -199,7 +199,7 @@ static SDL_bool NormalizeFrames(Frame_t *frames, int count)
     return SDL_TRUE;
 }
 
-Anim_t *
+static Anim_t *
 IMG_LoadGIF_RW_Internal(SDL_RWops *src, SDL_bool load_anim)
 {
     unsigned char buf[16];