delete config only when there is no domain

func/domain.sh

@@ -271,7 +271,7 @@ del_web_config() {
     get_web_config_lines $WEBTPL/$1/$WEB_BACKEND/$2 $conf
     sed -i "$top_line,$bottom_line d" $conf
 
-    web_domain=$(grep $domain $USER_DATA/web.conf |wc -l)
+    web_domain=$(grep DOMAIN $USER_DATA/web.conf |wc -l)
     if [ "$web_domain" -eq '0' ]; then
         sed -i "/.*\/$user\/.*$1.conf/d" /etc/$1/conf.d/vesta.conf
         rm -f $conf