CLLocationCoordinate2D 初始化

CLLocationCoordinate2D 直接赋值出错，如下：

正确的赋值方法如下：

    CLLocationCoordinate2D clLocationCoordinate2D;
    clLocationCoordinate2D.latitude = 131.1;
    clLocationCoordinate2D.longitude = 23.4;

    CLLocationCoordinate2D clLocationCoordinate2DTWO;   

    clLocationCoordinate2DTWO =clLocationCoordinate2D;