VC++在C++中停止注释内部冒号

如何停止用VIM在C++源代码中冒号的缩进更改?

例子:

class X
{
    public:
        /*
           Some comment here
TODO: make it better...
*/
        void f() {}
};

应该是:

class X
{
    public:
        /*
           Some comment here
           TODO: make it better...
           */
        void f() {}
};