sshd: guard dbus calls with optional_policy

Just noticed when checking calls for another problem in authlogin.

Signed-off-by: Sam James <sam@gentoo.org>

Author: thesamesam

policy/modules/services/ssh.te

@@ -286,8 +286,10 @@ ifdef(`distro_debian',`
 ')
 
 ifdef(`init_systemd',`
-	auth_use_pam_systemd(sshd_t)
-	init_dbus_chat(sshd_t)
+	optional_policy(`
+		auth_use_pam_systemd(sshd_t)
+		init_dbus_chat(sshd_t)
+	')
 	# dynamic users
 	init_stream_connect(sshd_t)
 	init_rw_stream_sockets(sshd_t)