SDL: Safety fix: clear "_this->wakeup_window" when destroying the window (16c9b)

SDL Commits
1 
From 16c9bad78671713b20628eed0e3738d3429a5951 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

(cherry picked from commit c838ccf0e3a330ebbcf433698b8f5370c6fa80d6)
---
 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 573b38f050a3..ff50151b2535 100644
--- a/src/video/SDL_video.c
+++ b/src/video/SDL_video.c
@@ -3276,6 +3276,10 @@ 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;