kernel-libipsec: Remove exclude route (reference) if route is updated

Fixes: 587bdf8768 ("kernel-libipsec: Track policies and automatically install routes")

src/libcharon/plugins/kernel_libipsec/kernel_libipsec_ipsec.c

@@ -486,6 +486,7 @@ static bool install_route(private_kernel_libipsec_ipsec_t *this,
 				 "%R === %R %N", src_ts, dst_ts, policy_dir_names,
 				 policy->direction);
 		}
+		remove_exclude_route(this, old);
 		route_entry_destroy(old);
 		policy->route = NULL;
 	}