net: use callback to properly propagate error

The socket will be destroyed upstream through the proper error
flow.

PR-URL: #29178
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

lib/net.js

@@ -685,7 +685,7 @@ Socket.prototype._writeGeneric = function(writev, data, encoding, cb) {
   this._pendingEncoding = '';
 
   if (!this._handle) {
-    this.destroy(new ERR_SOCKET_CLOSED(), cb);
+    cb(new ERR_SOCKET_CLOSED());
     return false;
   }