Comment 2 for bug 1053044

StacktraceTop:
 gala_app_icon_drag_end (self=0x12a6700, actor=0x12a6700, x=609, y=703, modifier=272) at /build/buildd/gala-0.1/src/Widgets/AppIcon.vala:73
 _gala_app_icon_drag_end_clutter_drag_action_drag_end (_sender=0x1708280, actor=0x12a6700, event_x=609, event_y=703, modifiers=272, self=0x12a6700) at /build/buildd/gala-0.1/src/Widgets/AppIcon.vala:40
 g_closure_invoke (closure=0x1705020, return_value=0x0, n_param_values=5, param_values=0x7fff61e93b70, invocation_hint=<optimized out>) at /build/buildd/glib2.0-2.32.3/./gobject/gclosure.c:777
 signal_emit_unlocked_R (node=<optimized out>, detail=0, instance=<optimized out>, emission_return=0x0, instance_and_params=0x7fff61e93b70) at /build/buildd/glib2.0-2.32.3/./gobject/gsignal.c:3547
 g_signal_emit_valist (instance=0x1708280, signal_id=<optimized out>, detail=0, var_args=<optimized out>) at /build/buildd/glib2.0-2.32.3/./gobject/gsignal.c:3296