Fix function prototype.
Fix function prototype.

mrjimenez/pupnp,commshare/pupnp,mrjimenez/pupnp,commshare/pupnp,BelledonneCommunications/libupnp,BelledonneCommunications/libupnp,BelledonneCommunications/libupnp,mrjimenez/pupnp,BelledonneCommunications/libupnp,mrjimenez/pupnp,commshare/pupnp