video: NULL out pointer to freed window surface

This behavior matches SDL_RecreateWindow and makes it less likely that another piece of code (e.g. a DestroyWindowFramebuffer implementation) will attempt to use or free the stale surface pointer.
libsdl-org · Apr 12, 2020 · 8a5ee3f · 8a5ee3f
1 parent abcc670
commit 8a5ee3f
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/src/video/SDL_video.c b/src/video/SDL_video.c
@@ -2796,6 +2796,8 @@ SDL_DestroyWindow(SDL_Window * window)
     if (window->surface) {
         window->surface->flags &= ~SDL_DONTFREE;
         SDL_FreeSurface(window->surface);
+        window->surface = NULL;
+        window->surface_valid = SDL_FALSE;
     }
     if (_this->DestroyWindowFramebuffer) {
         _this->DestroyWindowFramebuffer(_this, window);