No ddns credentials for onion only system

src/freedombone

@@ -866,6 +866,7 @@ function parse_args {
         exit 3
     fi
     if [[ $SYSTEM_TYPE != "$VARIANT_MESH" ]]; then
+        if [[ $ONION_ONLY == "no" ]]; then
             if [ ! $DDNS_USERNAME ]; then
                 echo $'Please provide the username for your dynamic DNS provider with the --ddnsuser option'
                 exit 7823
@@ -875,6 +876,7 @@ function parse_args {
                 exit 6382
             fi
         fi
+    fi
     if [ ! $SYSTEM_TYPE ]; then
         SYSTEM_TYPE=$VARIANT_FULL
     fi