Invalid behavior in some functions with return parameters

## Source code

```go
package main

import (
        "fmt"
)

func f() (err error) {
        defer func() {
                _ = recover()
        }()
        var i int
        _ = 1 / i
        return nil
}

func main() {
        fmt.Println(f())
}

```

## Scriggo output

```
runtime error: integer divide by zero
```

## gc output

```
<nil>
```