Add call to callback in WebsocketProvider.prototype.send on error (#1209)

Author: gabmontes

packages/web3-providers-ws/src/index.js

@@ -216,6 +216,7 @@ WebsocketProvider.prototype.send = function (payload, callback) {
         } else {
             console.error('no error callback');
         }
+        callback(new Error('connection not open'));
         return;
     }