Sergey Biryukov 1878f25e54 Database: Use a strict comparison for has_filter() check in wpdb::placeholder_escape().
The filter is added with a priority of `0`, so a loose comparison had an unintended effect of adding the filter on every call.

Props withinboredom.
Fixes #47430.

git-svn-id: https://develop.svn.wordpress.org/trunk@45707 602fd350-edb4-49c9-b593-d223f7449a82
2019-08-01 02:24:08 +00:00
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