exit when there was no renewal.

templates/vsftpd-letsencrypt-acme.sh.j2

@@ -17,8 +17,9 @@ logger "acme-pg-hook: Check if the certificate has been renewed"
 cmp ${LE_CERTS_DIR}/cert  ${VSFTPD_CERTFILE}
 RETVAL=$?
 if [ $RETVAL -eq 0 ] ; then
-    logger "acme-vsftpd-hook: No new cerficate."
-    echo "acme-vsftpd-hook: No new cerficate." >> $LE_LOG_DIR/vsftpd.log
+    logger "acme-vsftpd-hook: No new cerficate, exiting."
+    echo "acme-vsftpd-hook: No new cerficate, exiting." >> $LE_LOG_DIR/vsftpd.log
+    exit 0
 else
     logger "acme-vsftpd-hook: Copying the certificate file"
     echo "Copy the key file" >> $LE_LOG_DIR/vsftpd.log