Undefined index: parenthesis_closer in with $this->fn

[BafS]

Since version 6 I have Undefined index: parenthesis_closer errors due to the fact that I use $this->fn in some classes. Same error with $foo->fn.

Minimal example:

<?php
class Test {
    public function foo() {
        $this->fn = 'a';
    }
}

gives

 1 | ERROR | An error occurred during processing; checking has been
   |       | aborted. The error message was: Undefined index:
   |       | parenthesis_closer in
   |       | /var/www/api/vendor/slevomat/coding-standard/SlevomatCodingStandard/Helpers/FunctionHelper.php
   |       | on line 218

[BafS]

It's probably related to squizlabs/PHP_CodeSniffer#2828

[kukulich]

Please report it directly in PHPCS.

[github-actions]

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