PHP 8.1 compatibility

Problem/Motivation

Compatibility check gives this error:

FILE: /var/www/html/docroot/sites/all/modules/contrib/field_ipaddress/field_ipaddress.module
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FOUND 0 ERRORS AND 1 WARNING AFFECTING 1 LINE
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 451 | WARNING | Function each() is deprecated since PHP 7.2; Use a foreach loop instead
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Proposed resolution

Patch forthcoming.