Don't use idle function when animating markers
Don't use idle function when animating markers

Use of idle functions is dangerous in clutter because actors
can be destroyed by clutter_actor_destroy() even if they are
reffed.

Distrotech/libchamplain,Distrotech/libchamplain,Distrotech/libchamplain,Distrotech/libchamplain,Distrotech/libchamplain