Start settings activity in a new task, so that if the LauncherActivity finishes from behind, the task does not enter an inconsistant state

am: 53f93b9c15

Change-Id: I9a21552903d44b468d42efebbe60353b9b0c91a5

src/com/android/launcher3/Launcher.java

@@ -2571,6 +2571,7 @@ public class Launcher extends BaseActivity
         Intent intent = new Intent(Intent.ACTION_APPLICATION_PREFERENCES)
                 .setPackage(getPackageName());
         intent.setSourceBounds(getViewBounds(v));
+        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
         startActivity(intent, getActivityLaunchOptions(v));
     }