Uses template_include hook incorrectly

Hi,

This plugin uses the template_include filter but in some cases serve_file() will return false or null. I’m using the roots theme framework which has a template_include filter at priority 99, so when it gets passed null or false it produces errors like these:

PHP Warning: include(): Filename cannot be empty in /var/vhosts/……../base.php on line 17

I think in the cases where you’re returning false or null it may be more appropriate to exit/die, and that should lead to less adverse reactions with other plugins and themes.

Thanks,
Tom Adams
dxw

https://ww.wp.xz.cn/plugins/wp-document-revisions/