[C++] HostsPatch

[mcp]

If you're doing C++, SESE is pretty much outdated. The better alternative is to use the RAII principle (resource acquisition is initialization), i.e. you would have a local instance of a HANDLE-class that closes the handle on destruction. You can even "abuse" std::unique_ptr for this by providing a custom deleter.
This also makes the code much more readable than the SESE style. Also, you almost never want to use raw memory (i.e. naked pointers). Simply use unique_ptr, which automatically makes you exception save and prevents any memory leaks.