fix: Fix a typo in current time display component. (#4647)

src/js/control-bar/time-controls/current-time-display.js

@@ -64,7 +64,7 @@ class CurrentTimeDisplay extends TimeDisplay {
     if (!this.player_.duration()) {
       return;
     }
-    this.updateFormattedTime_(this.player.duration());
+    this.updateFormattedTime_(this.player_.duration());
   }
 
 }