Merge branch 'dev' into dev-tostring4filenodes

packages/node_modules/@node-red/nodes/core/network/21-httprequest.js

@@ -637,6 +637,7 @@ in your Node-RED user directory (${RED.settings.userDir}).
                     msg.payload = msg.payload.toString('utf8'); // txt
 
                     if (node.ret === "obj") {
+                        if (msg.statusCode == 204){msg.payload= "{}"}; 
                         try { msg.payload = JSON.parse(msg.payload); } // obj
                         catch(e) { node.warn(RED._("httpin.errors.json-error")); }
                     }