Remove unnecessary lock to save 1 allocation per TextView

    private InputFilter[] mFilters = NO_FILTERS;

    private volatile Locale mCurrentSpellCheckerLocaleCache;

    private final ReentrantLock mCurrentTextServicesLocaleLock = new ReentrantLock();

    // It is possible to have a selection even when mEditor is null (programmatically set, like when

    // a link is pressed). These highlight-related fields do not go in mEditor.

    }

    private void updateTextServicesLocaleAsync() {

        // AsyncTask.execute() uses a serial executor which means we don't have

        // to lock around updateTextServicesLocaleLocked() to prevent it from

        // being executed n times in parallel.

        AsyncTask.execute(new Runnable() {

            @Override

            public void run() {

                if (mCurrentTextServicesLocaleLock.tryLock()) {

                    try {

                updateTextServicesLocaleLocked();

                    } finally {

                        mCurrentTextServicesLocaleLock.unlock();

                    }

                }

            }

        });

    }