PHP 7.4 Compatibility issue Indirect access to variables

Fix proposed. Please check if the curly braces are placed correctly, not including the [$id] part. https://gist.github.com/mircobabini/868d013722cf28ac716ab87af909bcc0/revisions

FILE: public_html/wp-content/plugins/admin-menu-editor/includes/bbpress-role-override.php
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FOUND 3 ERRORS AFFECTING 3 LINES
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 28 | ERROR | Indirect access to variables, properties and methods will be evaluated strictly in left-to-right order since PHP 7.0. Use curly braces to remove ambiguity.
 29 | ERROR | Indirect access to variables, properties and methods will be evaluated strictly in left-to-right order since PHP 7.0. Use curly braces to remove ambiguity.
 50 | ERROR | Indirect access to variables, properties and methods will be evaluated strictly in left-to-right order since PHP 7.0. Use curly braces to remove ambiguity.
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