Removed the `2` from `ER_ACCESS_DENIED_ERROR` so that it will actually match if able.

lib/dialects/mysql/connection-manager.js

@@ -46,7 +46,7 @@ ConnectionManager.prototype.connect = function(config) {
           case 'ECONNREFUSED':
             reject(new sequelizeErrors.ConnectionRefusedError(err));
             break;
-          case 'ER_ACCESS_D2ENIED_ERROR':
+          case 'ER_ACCESS_DENIED_ERROR':
             reject(new sequelizeErrors.AccessDeniedError(err));
             break;
           case 'ENOTFOUND':