Fixed a crash when destroying the actor of a LEAVE event
Fixed a crash when destroying the actor of a LEAVE event

When processing a LEAVE event, one might destroy the actor, so the weak
reference device->actor would be NULL.

http://bugzilla.clutter-project.org/show_bug.cgi?id=2502

Signed-off-by: Emmanuele Bassi <049ee2061f71220e5aaf33f5be422fc2a2b06a44@linux.intel.com>

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