From d05b7becc05771ed88e2f7f2d2aecbf4fb264635 Mon Sep 17 00:00:00 2001
From: Bernat Romagosa <bromagosa@e-citilab.eu>
Date: Wed, 20 Feb 2019 09:22:11 +0100
Subject: [PATCH] Removes JS error when clicking on "play sound until done"
 with no sound selected

---
 src/threads.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/threads.js b/src/threads.js
index 72237b3b..8f308a8d 100644
--- a/src/threads.js
+++ b/src/threads.js
@@ -2226,7 +2226,7 @@ Process.prototype.doPlaySoundUntilDone = function (name) {
     if (this.context.activeAudio === null) {
         this.context.activeAudio = sprite.playSound(name);
     }
-    if (this.context.activeAudio.ended
+    if (name === null || this.context.activeAudio.ended
             || this.context.activeAudio.terminated) {
         return null;
     }