Makes cleanForSlug more robust when receiving falsy values. #16236
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Description
Fixes https://core.trac.wordpress.org/ticket/47216
Currently, cleanForSlug is used a few times with the assumption that it'll return a falsy value for a falsy input (see post-link or post-permalink) but it crashes as it assumes the argument to be string.
How has this been tested?
I ran this change in a local WordPress instance with the testing procedure outlined in the WordPress issue.
Types of changes
Bug fix.
Checklist: