Merge pull request #3261 from node-red/fix-delay-2nd-output-when-in-per-topic-mode

fix 2nd output when in rate limit per topic modes

packages/node_modules/@node-red/nodes/core/function/89-delay.js

@@ -372,6 +372,7 @@ module.exports = function(RED) {
                 hit = false;
                 for (var b in node.buffer) { // check if already in queue
                     if (msg.topic === node.buffer[b].msg.topic) {
+                        if (node.outputs === 2) { send([null,node.buffer[b].msg]) }
                         node.buffer[b].done();
                         node.buffer[b] = {msg, send, done}; // if so - replace existing entry
                         hit = true;