Silence another compiler warning
Silence another compiler warning

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