defer_return.md "The defer function must be a function literal declared inside the caller." is not correct

[tv42]

https://github.com/seebs/notes/blob/master/defer_return.md

It is possible for a deferred function call to modify the return value of its caller in go. For this to happen, two things must be the case: [...] The defer function must be a function literal declared inside the caller.

This is not correct.

func inc(p *int) { *p++ }

func foo() (n int) {
    defer inc(&n)
    return 42
}