not a package: "n" in n.multiply <*ast.SelectorExpr>

```go
type Node struct {
value int
next *Node
}

func (n Node) multiply(x int) int {
return n.value * x
}

n := Node{2, nil}
n.multiply(3)
```

repl.go:11:1: not a package: "n" in n.multiply <*ast.SelectorExpr>

However, this works:

```go
type Node struct {
value int
}

func (n Node) multiply(x int) int {
return n.value * x
}

n := Node{2}
n.multiply(3)
```

Versions:

- go version go1.19.2 linux/amd64
- gophernotes@v0.7.5

Related to #240