The WebAudioSoundManager will no longer try to unlock itself if the Game hasn't already booted and been added to the DOM. It will now wait for the BOOT event and unlock based on that. Fix phaserjs#5439

Author: photonstorm

src/sound/webaudio/WebAudioSoundManager.js

@@ -9,6 +9,7 @@ var Base64ToArrayBuffer = require('../../utils/base64/Base64ToArrayBuffer');
 var BaseSoundManager = require('../BaseSoundManager');
 var Class = require('../../utils/Class');
 var Events = require('../events');
+var GameEvents = require('../../core/events');
 var WebAudioSound = require('./WebAudioSound');
 
 /**
@@ -83,10 +84,14 @@ var WebAudioSoundManager = new Class({
 
         BaseSoundManager.call(this, game);
 
-        if (this.locked)
+        if (this.locked && game.isBooted)
         {
             this.unlock();
         }
+        else
+        {
+            game.events.once(GameEvents.BOOT, this.unlock, this);
+        }
     },
 
     /**