Allow ignoring empty structs

[bkmeneguello]

A common idiom in Go is creating empty structs instead of using other constructs, like:

• x := Y{}, instead of var x Y
• x := &Y{}, instead of x := new(Y)

But this linter complains about that. Could be an option to "ignore empty struct initializations"?

[shanee-vanstone-sp]

Hi Bkmeneguello. I'd really love the same feature too! I had a go at putting together a pull request for it if you want to try it out. #118

[sineemore]

Have same request, but for returns with signature (T, bool).

Currently linter checks for (T, error) cases and allows empty structs.
I think it will be beneficial to add same for (T, bool) signatures:

type DivResult struct {
  Result int
}

func Div(a, b int) (X, bool) {
  if b == 0 {
    return X{}, false // <-- error here
  }

  return X{a / b}, true
}