SDL: Safety fix: clear "_this->wakeup_window" when destroying the window

SDL Commits
1 
From c838ccf0e3a330ebbcf433698b8f5370c6fa80d6 Mon Sep 17 00:00:00 2001
From: Sylvain <[EMAIL REDACTED]>
Date: Tue, 28 Mar 2023 09:49:45 +0200
Subject: [PATCH] Safety fix: clear "_this->wakeup_window" when destroying the
 window

---
 src/video/SDL_video.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/video/SDL_video.c b/src/video/SDL_video.c
index 8de3b6fbbdfb..2ead29e6d047 100644
--- a/src/video/SDL_video.c
+++ b/src/video/SDL_video.c
@@ -3462,6 +3462,10 @@ void SDL_DestroyWindow(SDL_Window *window)
         _this->current_glwin = NULL;
     }
 
+    if (_this->wakeup_window == window) {
+        _this->wakeup_window = NULL;
+    }
+
     /* Now invalidate magic */
     window->magic = NULL;