bin-layout: Fix a leak
bin-layout: Fix a leak

https://bugzilla.gnome.org/show_bug.cgi?id=655342

heysion/clutter-clone,jigpu/clutter,collects/clutter,heysion/clutter-clone,djdeath/clutter-multithreaded,djdeath/clutter-multithreaded,djdeath/clutter-android,GNOME/clutter,djdeath/clutter,jigpu/clutter,djdeath/clutter,djdeath/clutter,heysion/clutter-clone,ebassi/clutter,kerrickstaley/clutter-vala,djdeath/clutter-android,heysion/clutter-clone,djdeath/clutter,djdeath/clutter,collects/clutter,ebassi/clutter,collects/clutter,GNOME/clutter,Distrotech/clutter,collects/clutter,djdeath/clutter,jigpu/clutter,ebassi/clutter,Distrotech/clutter,djdeath/clutter-android,ebassi/clutter,Distrotech/clutter,jigpu/clutter,jigpu/clutter,djdeath/clutter-multithreaded,kerrickstaley/clutter-vala,GNOME/clutter,djdeath/clutter-android,djdeath/clutter-android,GNOME/clutter,collects/clutter,heysion/clutter-clone,ebassi/clutter,Distrotech/clutter,jigpu/clutter,GNOME/clutter,Distrotech/clutter,djdeath/clutter-multithreaded,kerrickstaley/clutter-vala,Distrotech/clutter,kerrickstaley/clutter-vala