Update post.php #5083
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Update post.php #5083
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Prevent passing null to param #2 of preg_match()
Since param #2 of preg_match() needs to be a string, this checks to make sure
$realis a string, and that$realis not empty, since it's a waste of CPU to run preg_match() on an empty string/value.Trac ticket: https://core.trac.wordpress.org/ticket/59195
This Pull Request is for code review only. Please keep all other discussion in the Trac ticket. Do not merge this Pull Request. See GitHub Pull Requests for Code Review in the Core Handbook for more details.