fixed gamepad refresh to be done only if there is an active gamepad

js/gamepad.js

@@ -215,13 +215,13 @@ class Gamepad {
     }
 
     updateVisualStatus() {
-        this.refreshGamepads();
-
         // ensure that a gamepad is currently active
         if (!this.activeGamepad) {
             return;
         }
 
+        this.refreshGamepads();
+
         requestAnimationFrame(this.updateVisualStatus.bind(this));
 
         let button;