Fix T45699: BGE auto-run exits immediately

Referenced by issue #46202, Fullscreen crashes Blender on Mac OS X
Referenced by issue #45699, Script autorun closes immediately on Windows

source/blender/windowmanager/intern/wm_window.c

@@ -1020,6 +1020,10 @@ static int ghost_event_proc(GHOST_EventHandle evt, GHOST_TUserDataPtr C_void_ptr
 						wm_event_do_handlers(C);
 						wm_event_do_notifiers(C);
 						wm_draw_update(C);
+
+						/* Warning! code above nulls 'C->wm.window', causing BGE to quit, see: T45699.
+						 * Further, its easier to match behavior across platforms, so restore the window. */
+						CTX_wm_window_set(C, win);
 #endif
 					}
 				}