Using checkTouchLocked with seek property

Author: pavle-goloskokovic

src/sound/html5/HTML5AudioSound.js

@@ -376,6 +376,9 @@ Object.defineProperty(HTML5AudioSound.prototype, 'seek', {
         }
     },
     set: function (value) {
+        if (this.checkTouchLocked('property', 'seek', value)) {
+            return;
+        }
         if (this.startTime > 0) {
             return;
         }