Fix error when DNS domain was present

output : Error: invalid ttl format :: yes

bin/v-add-mail-domain-webmail

@@ -100,17 +100,17 @@ else
         if [ "$dns_domain" = "$domain" ]; then
             if [ -z "$webmail_record" ]; then
                 if [ "$quiet" = "yes" ]; then
-                    $BIN/v-add-dns-record $user $domain $WEBMAIL_ALIAS A $ip '' '' $restart '' 'yes'
+                    $BIN/v-add-dns-record $user $domain $WEBMAIL_ALIAS A $ip '' '' '$restart' '' 'yes'
                 else
-                    $BIN/v-add-dns-record $user $domain $WEBMAIL_ALIAS A $ip '' '' $restart '' 'yes'
+                    $BIN/v-add-dns-record $user $domain $WEBMAIL_ALIAS A $ip '' '' '$restart' '' 'yes'
                 fi
             else
                 if [ "$quiet" = "yes" ]; then
                     $BIN/v-delete-dns-record $user $domain $webmail_record $restart 'yes'
-                    $BIN/v-add-dns-record $user $domain $WEBMAIL_ALIAS A $ip '' '' $restart '' 'yes'
+                    $BIN/v-add-dns-record $user $domain $WEBMAIL_ALIAS A $ip '' '' '$restart' '' 'yes'
                 else
                     $BIN/v-delete-dns-record $user $domain $webmail_record $restart 'yes'
-                    $BIN/v-add-dns-record $user $domain $WEBMAIL_ALIAS A $ip '' '' $restart '' 'yes'
+                    $BIN/v-add-dns-record $user $domain $WEBMAIL_ALIAS A $ip '' '' '$restart' '' 'yes'
                 fi
             fi
         fi