sdl2-compat: update headers from latest SDL2. (a4370)

From a4370093d5454bd5f85d03145a2a754c984bba9a Mon Sep 17 00:00:00 2001
From: Ozkan Sezer <[EMAIL REDACTED]>
Date: Mon, 13 Oct 2025 10:05:47 +0300
Subject: [PATCH] update headers from latest SDL2.

---
 include/SDL2/SDL_video.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/SDL2/SDL_video.h b/include/SDL2/SDL_video.h
index 6972af6..e1c3c27 100644
--- a/include/SDL2/SDL_video.h
+++ b/include/SDL2/SDL_video.h
@@ -1008,6 +1008,8 @@ extern DECLSPEC void SDLCALL SDL_GetWindowPosition(SDL_Window * window,
  * \param h the height of the window in pixels, in screen coordinates, must be
  *          > 0.
  *
+ * \threadsafety This function should only be called on the main thread.
+ *
  * \since This function is available since SDL 2.0.0.
  *
  * \sa SDL_GetWindowSize