Follow up on negative predicate return value cleanup

 * Discovered some more on eswiki:Lenguas_bereberes

 * Continues from 724749aac29814b97ce29081ea17e7a69d626e32

Change-Id: I1f1639fc7d6a00048f60cbaeb98a4694412e509b
Merge "Follow up on negative predicate return value cleanup"