There are places in the HTML API code where some tools get confused and flag invalid types for the return of a function because they are unable to detect that the end of the function is unreachable.
Since PHP doesn't provide a way to encode total matching in the source code, this patch adds a few extra lines in those unreachable locations to satisfy any tooling which isn't able to fully analyze the code.
Additionally this serves as extra guarding in case someone changes these functions in a way which would break them and the existing test suite doesn't catch those breakages.
Developed in https://github.com/WordPress/wordpress-develop/pull/7315
Discussed in https://core.trac.wordpress.org/ticket/62018
Props dlh, dmsnell.
Fixes#62018.
Built from https://develop.svn.wordpress.org/trunk@59001
git-svn-id: http://core.svn.wordpress.org/trunk@58397 1a063a9b-81f0-0310-95a4-ce76da25c4cd
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