Function gio_sys::g_socket_leave_multicast_group

pub unsafe extern fn g_socket_leave_multicast_group(socket: *mut GSocket,
                                                    group: *mut GInetAddress,
                                                    source_specific: gboolean,
                                                    iface: *const c_char,
                                                    error: *mut *mut GError)
                                                    -> gboolean