(refactor) move recv message log earlier in the handler logic

Author: f3rno

lib/transports/ws2.js

@@ -550,6 +550,8 @@ class WSv2 extends EventEmitter {
    * @private
    */
   _onWSMessage (msgJSON, flags) {
+    debug('recv msg: %s', msgJSON)
+
     this._packetWDLastTS = Date.now()
     this._resetPacketWD()