Merge "Fix regression, don't NPE if Switch doesn't have a thumb set" into lmp-mr1-dev

     * @return true if (x, y) is within the target area of the switch thumb

     */

    private boolean hitThumb(float x, float y) {

        if (mThumbDrawable == null) {

            return false;

        }

        // Relies on mTempRect, MUST be called first!

        final int thumbOffset = getThumbOffset();