SDL: Don't call SDL_Gtk_Quit() on private platforms (832b2)

SDL Commits
1 
From 832b2aaf392c363cf46e9724b99d5eb934be805e Mon Sep 17 00:00:00 2001
From: Sam Lantinga <[EMAIL REDACTED]>
Date: Mon, 5 Jan 2026 08:08:33 -0800
Subject: [PATCH] Don't call SDL_Gtk_Quit() on private platforms

(cherry picked from commit c742038aa96c53d90bf47c0974db1d20c9796390)
---
 src/SDL.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/SDL.c b/src/SDL.c
index 4793f75cad734..5b49f3cf138bc 100644
--- a/src/SDL.c
+++ b/src/SDL.c
@@ -689,7 +689,7 @@ void SDL_Quit(void)
     SDL_DBus_Quit();
 #endif
 
-#if defined(SDL_PLATFORM_UNIX) && !defined(SDL_PLATFORM_ANDROID) && !defined(SDL_PLATFORM_EMSCRIPTEN)
+#if defined(SDL_PLATFORM_UNIX) && !defined(SDL_PLATFORM_ANDROID) && !defined(SDL_PLATFORM_EMSCRIPTEN) && !defined(SDL_PLATFORM_PRIVATE)
     SDL_Gtk_Quit();
 #endif