SDL_image: stb_image.h: silence warnings for unused thread-local procs.

From 36c106ba5a5f55c8272ce626865dc998bb0a8095 Mon Sep 17 00:00:00 2001
From: Ozkan Sezer <[EMAIL REDACTED]>
Date: Sat, 28 May 2022 17:55:20 +0300
Subject: [PATCH] stb_image.h: silence warnings for unused thread-local procs.

also fixed one of those function names (c.f. mainstream PR/1276.)
 stb_image.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/stb_image.h b/stb_image.h
index 526f9be..b85691a 100644
--- a/stb_image.h
+++ b/stb_image.h
@@ -514,12 +514,14 @@ STBIDEF void stbi_convert_iphone_png_to_rgb(int flag_true_if_should_convert);
 // flip the image vertically, so the first pixel in the output array is the bottom left
 STBIDEF void stbi_set_flip_vertically_on_load(int flag_true_if_should_flip);
 // as above, but only applies to images loaded on the thread that calls the function
 // this function is only available if your compiler supports thread-local variables;
 // calling it will fail to link if your compiler doesn't
 STBIDEF void stbi_set_unpremultiply_on_load_thread(int flag_true_if_should_unpremultiply);
 STBIDEF void stbi_convert_iphone_png_to_rgb_thread(int flag_true_if_should_convert);
 STBIDEF void stbi_set_flip_vertically_on_load_thread(int flag_true_if_should_flip);
 // ZLIB client - used by PNG, available for other purposes
@@ -4970,7 +4972,7 @@ STBIDEF void stbi_convert_iphone_png_to_rgb(int flag_true_if_should_convert)
 static STBI_THREAD_LOCAL int stbi__unpremultiply_on_load_local, stbi__unpremultiply_on_load_set;
 static STBI_THREAD_LOCAL int stbi__de_iphone_flag_local, stbi__de_iphone_flag_set;
-STBIDEF void stbi__unpremultiply_on_load_thread(int flag_true_if_should_unpremultiply)
+STBIDEF void stbi_set_unpremultiply_on_load_thread(int flag_true_if_should_unpremultiply)
    stbi__unpremultiply_on_load_local = flag_true_if_should_unpremultiply;
    stbi__unpremultiply_on_load_set = 1;