Stubs not generating correct return on optional var

[ruudboon]

When generating stubs and we have something like:

public function getVar(string! key) -> var | null

It will result in something like this causing a PHP error.

public function getVar(string $key): ? {}

Expected result

public function getVar(string $key) {}

[danhunsaker]

Looks like the null check needs to be tempered by whether there's a concrete non-null type being output.

[sergeyklay]

Fixed in the development branch. Feel free to open a new issue if the problem appears again. Thank you for the bug report.