Elgg/Elgg — comment on commit 6d0991b93c251473bc37a06bd383c362f9d396a9
File: engine/lib/metadata.php line 311
By brettp:

This change broke a unit test for http://trac.elgg.org/ticket/2273 in which deleting invalid metadata should return null instead of false. Do we want to keep the null vs false difference? If not I'll update the unit test.