sys/auto_init/screen/lvgl: check if display is present

Author: leandrolanzieri

sys/auto_init/screen/auto_init_lvgl.c

@@ -50,6 +50,10 @@ void auto_init_lvgl(void)
     /* Only a single screen is supported by lvgl */
 #if !IS_USED(MODULE_LV_DRIVERS_SDL)
     disp_dev_reg_t *disp_dev = disp_dev_reg_find_screen(CONFIG_LVGL_SCREEN_DEFAULT);
+    if (disp_dev == NULL) {
+        puts("[auto_init_screen] error: no display device found\n");
+        return;
+    }
     s_screen.display = disp_dev->dev;
 #endif