zendframework/zf2 — pull request #4971 by bacinsky (2013-08-16 06:49:58+00:00)
Title: Form\Factory can handle config with null elements

There is an use case, when I have configured form with elements, but I want to disable some elements later in the config of the other module. So I override it with null, but the Form\Factory doesn't recognize it, so it needs a little fix.