Clear the selection override even if renderer is disabled

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=134078455

demo/src/main/java/com/google/android/exoplayer2/demo/TrackSelectionHelper.java

@@ -203,11 +203,7 @@ import java.util.Locale;
 
   @Override
   public void onClick(DialogInterface dialog, int which) {
-    if (isDisabled) {
-      selector.setRendererDisabled(rendererIndex, true);
-      return;
-    }
-    selector.setRendererDisabled(rendererIndex, false);
+    selector.setRendererDisabled(rendererIndex, isDisabled);
     if (override != null) {
       selector.setSelectionOverride(rendererIndex, trackGroups, override);
     } else {