log4cxx中文输出错误补丁

void main()
{
    setlocale(LC_ALL, "");
    LOG4CXX_INFO(pLog, "一二");  // log 2 chinese characters.
}

size_t converted = mbsrtowcs(...
   if (converted == (size_t) -1) {
       ...
   } else {
       stat = append(out, buf);
       in.position(in.position() + converted);  // ERROR!
   }

if (converted == (size_t) -1) {
       ...
   } else {
       stat = append(out, buf);
       // in.position(in.position() + converted);  // ERROR!
       if (src)
           in.position(src - in.data());
       else  // mbsrtowcs() set src to NULL.
           in.position(in.position() + strnlen(in.current(), in.remaining()));
   }