Bug in conversion from FileNode to Vec2i (Bug #4417)

Hi! I'm using OpenCV 3.0.0 with Visual Studio 2013 C++.
I catched some bug in conversion from FileNode to Vec2i.

I have file with data, that was created by class Params (see below):
%YAML:1.0
prms0:
mh: [ 233, 255 ]

I have class, write and read functions was created as http://docs.opencv.org/doc/tutorials/core/file_input_output_with_xml_yml/file_input_output_with_xml_yml.html chapter№5:

@class Params{
public:
Vec2i mh;

void write(FileStorage& fs) const {
        fs << "{" << "mh" << mh <<"}";
    }

void read(const FileNode& node){
        mh = (Vec2i)node["mh"]; //if I use this way for read node "mh" then mh=[ 2147483647, 0 ], this is NOT properly!

//if I use this way for read node "mh" then mh=[ 233, 255 ], this is properly!
        FileNode n = node["mh"];
        FileNodeIterator it = n.begin(), it_end = n.end();
        for (int i=0; it != it_end; +it,i+)
            mh[i] = (int)*it;
    }

Params(){
        mh = Vec2i(100, 500); 
    }

};

void write(FileStorage& fs, const std::string&, const Params& x) {
x.write(fs);
}

void read(const FileNode& node, Params& x, const Params& default_value = Params()) {
if (node.empty())
x = default_value;
else
x.read(node);
}@
I don't why site doesn't show this part as code.

How I used this:


...blablabla.....
fs = FileStorage(param_n, FileStorage::WRITE);
fs << "prms0" << prms[0];
fs.release();
...blablabla.....