analysis: Fix the "key-press-event" callback signature
analysis: Fix the "key-press-event" callback signature

We were returning FALSE in a function declared as returning a gpointer.
Turns out that the function should return a gboolea instead.

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