Assign non-out/ref arg from AndDoes

[dtchepak]

Just realised that out and ref arguments can also be set via AndDoes (in the same way they can be set from Returns). This should probably also result in a NS3005 if a non-out/ref arg is set.

        public interface ILookup { bool Lookup(string key, out int i); }

        [Fact]
        public void Test() {
            var sub = Substitute.For<ILookup>();

            sub.Lookup("blah", out Arg.Any<int>())
               .Returns(true)
               .AndDoes(x => x[0] = 45); // <-- incorrectly setting x[0] instead of x[1]. Should give NS3005

            sub.Lookup("blah", out var value);
        }