[jsb-cocos2dx3.0alpha1] CallFuncN.clone code mistake!

cocos2d-x JavaScript
#1 
CallFuncN * CallFuncN::clone() const
{
    // no copy constructor
    auto a = new CallFuncN();

    if( _selectorTarget) {
        a->initWithTarget(_selectorTarget, _callFuncN);
    }
    else if( _function ){  // this must be _functionN
        a->initWithFunction(_functionN);
    }

    a->autorelease();
    return a;
}
#2

Fixed at https://github.com/cocos2d/cocos2d-x/pull/4358.