[Preload] Bug pointer/struct

[novln]

Let's define 3 models:

type Project struct {
    User User
}

type User struct {
    Avatar *Avatar
}

type Avatar struct {

}

Using makroud.WithPreloadField("User.Avatar") on a Project is not working if User is a struct.
However, it's working if User is a pointer.

I think there is an error on the preload mechanism, it should mutate user with new value.

Thank @edouardparis for spotting this issue.