Fix bug due to error in arguments

bin/v-add-mail-account-fwd-only

@@ -52,7 +52,7 @@ is_object_unsuspended "mail/$domain" 'ACCOUNT' "$account"
 fwd=$(get_object_value "mail/$domain" 'ACCOUNT' "$account" '$FWD')
 if [ -z "$fwd" ]; then
     echo "Error: forward doesn't exist"
-    log_event "$E_NOTEXIST $ARGUMENTS"
+    log_event "$E_NOTEXIST" "$ARGUMENTS"
     exit $E_NOTEXIST
 fi