Decrements the reference count of a glib.Hook If the reference count falls to 0, the glib.Hook is removed from the glib.HookList and Hook.free is called to free it.
a glib.HookList
the glib.Hook to unref
Decrements the reference count of a glib.Hook If the reference count falls to 0, the glib.Hook is removed from the glib.HookList and Hook.free is called to free it.