sdl: call SDL_Quit() before exiting when receiving the SDL_QUIT event. It is necessary as the sdl tree move removed the atexit(SDL_Quit);

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@26283 a1c6a512-1295-4272-9138-f99709370657

firmware/target/hosted/sdl/button-sdl.c

@@ -176,6 +176,7 @@ void gui_message_loop(void)
             case SDL_QUIT:
             {
                 sim_exit_irq_handler();
+                SDL_Quit();
                 exit(EXIT_SUCCESS);
                 break;
             }