actor: Use CLUTTER_NEARBYINT instead of C integer casting
actor: Use CLUTTER_NEARBYINT instead of C integer casting

Otherwise we break because of rounding.

GNOME/clutter,jigpu/clutter,jigpu/clutter,GNOME/clutter,Distrotech/clutter,Distrotech/clutter,jigpu/clutter,Distrotech/clutter,GNOME/clutter,jigpu/clutter,GNOME/clutter,jigpu/clutter,Distrotech/clutter,jigpu/clutter,Distrotech/clutter,GNOME/clutter,Distrotech/clutter