From f2f4af259037ff97823cbb38691f4e1c0a8b560c Mon Sep 17 00:00:00 2001
From: Valerie Young <valerie@bocoup.com>
Date: Fri, 11 Jan 2019 16:47:42 -0500
Subject: [PATCH] Don't send disconnect to a closed device

---
 src/extensions/scratch3_gdx_for/index.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/extensions/scratch3_gdx_for/index.js b/src/extensions/scratch3_gdx_for/index.js
index ea38f96b1..df83d8459 100644
--- a/src/extensions/scratch3_gdx_for/index.js
+++ b/src/extensions/scratch3_gdx_for/index.js
@@ -107,6 +107,7 @@ class GdxFor {
     disconnect () {
         if (this._device) {
             this._device.close();
+            this._device = null;
             this._sensorsEnabled = false;
         }
     }