Updated sdl to use new VOUT_DISPLAY_CHANGE_DISPLAY_SIZE parameter.

modules/video_output/sdl.c

@@ -477,8 +477,10 @@ static int Control(vout_display_t *vd, int query, va_list args)
 
     case VOUT_DISPLAY_CHANGE_DISPLAY_SIZE: {
         const vout_display_cfg_t *cfg = va_arg(args, const vout_display_cfg_t *);
+        const bool is_forced = (bool)va_arg(args, int);
 
         /* */
+        if (is_forced)
             sys->display = SDL_SetVideoMode(cfg->display.width,
                                             cfg->display.height,
                                             sys->display_bpp, sys->display_flags);