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## recursivefactorial
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### Instructions
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Write a **recursive** function that returns the factorial of the `int` passed as parameter.
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Errors (non possible values or overflows) will return `0`.
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`for` is **forbidden** for this exercise.
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### Expected function
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```go
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func RecursiveFactorial(nb int) int {
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}
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```
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### Usage
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Here is a possible program to test your function :
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```go
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package main
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import (
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"fmt"
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"piscine"
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)
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func main() {
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arg := 4
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fmt.Println(piscine.RecursiveFactorial(arg))
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}
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```
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```console
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$ go run .
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24
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$
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```
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