Account for $meta arg in wp_prepare_attachment_for_js not being an array #1756
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Summary
Fixes #1755
This is a follow-up to #1719.
Relevant technical choices
The
dominant_color_prepare_attachment_for_js()
function depends on there being metadata associated with an attachment, since this metadata is where the dominant color information comes from. In addition to allowing$meta
to be passed asfalse
instead of anarray
(which fixes the fatal error), if it is passed asfalse
then the function now short-circuits since there is nothing for it to do.