fix issue: clear Le_Vlist earlier

acme.sh

@@ -3863,7 +3863,7 @@ issue() {
   _savedomainconf "Le_Keylength" "$_key_length"
 
   vlist="$Le_Vlist"
-
+  _cleardomainconf "Le_Vlist"
   _info "Getting domain auth token for each domain"
   sep='#'
   dvsep=','
@@ -4512,8 +4512,6 @@ $_authorizations_map"
     fi
   fi
 
-  _cleardomainconf "Le_Vlist"
-
   if [ "$ACME_VERSION" = "2" ]; then
     _debug "v2 chain."
   else