Merge "Allow null target in ObjectAnimator if the target has never been set" into nyc-mr1-dev

    @Override

    void animateValue(float fraction) {

        final Object target = getTarget();

        if (target == null) {

            // We lost the target reference, cancel and clean up.

        if (mTarget != null && target == null) {

            // We lost the target reference, cancel and clean up. Note: we allow null target if the

            /// target has never been set.

            cancel();

            return;

        }