Code freeze exception for gnome-software

[Florian Müllner <fmuellner gnome org>]

Hey,

I'd like to request a freeze break for
https://bugzilla.gnome.org/show_bug.cgi?id=736902, which fixes an
issue with Software's app-folder dialog not closing(*). The patch is
straight-forward and obvious, and fixes a fairly annoying problem.

-- Florian


(*) it turns out that unlike what the bug claims, the behavior is not
deterministic, e.g. the dialog closes correctly when the top of the
stack happens to be "falsey"