ReturnDefaultIfNotRegistered is not respected between scopes

[rick-palmsens]

The following code will throw even though IfUnresolved is set to ReturnDefaultIfNotRegistered:

class Program
{
    static void Main(string[] args)
    {
        var container = new Container();

        using (var scope = container.OpenScope())
        {
            var foo = scope.Resolve<Foo>(IfUnresolved.ReturnDefaultIfNotRegistered); // Does not throw
            scope.UseInstance<Foo>(new Foo()); // Do a registration within the scope
        }

        using (var scope = container.OpenScope())
        {
            var foo = scope.Resolve<Foo>(IfUnresolved.ReturnDefaultIfNotRegistered); // Throws
        }
    }
}

Since the registration happened within the first scope, I'd expect the second scope to simple be empty and not throw. Looking at the stack trace, the IfUnresolved parameter seems to get discarded half way through, and the code simply throws instead of checking if it should actually throw.

[dadhi]

@rick-palmsens Thanks for finding, will check. The fix PRs are appreciated as well (as you have already looking into the stack trace) ;)

[dadhi]

I have fixed the issue in the upcoming v4.8.4 but going forward please use Use instead of UseInstance as the later will be removed in the next major version.