Login and Registration: Check redirect_to type before calling str_contains()
#5227
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Trac ticket: https://core.trac.wordpress.org/ticket/59373.
This prevents URLs like
/wp-login.php?redirect_to[x]=y
from triggering a HTTP 500 response as result ofI considered changing the case for "authorize-application.php" to re-use the
$requested_redirect_to
variable but left it as-is because this case reads from _GET whereas the variable also considers POST parameters (via _REQUEST), which might be intentional. This case was introduced in [49109] for #42790.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.