properly distinc between validation and linting error

Author: pderaaij

lint.js

@@ -85,8 +85,7 @@ const command = async (specFile, cmd) => {
 
     validator.validate(spec, buildValidatorOptions(skip, verbose), (err, _options) => {
         const { context, warnings } = _options || err.options;
-
-        if (err && typeof _options !== 'undefined') {
+        if (err && err.options.valid === false) {
             console.error(colors.red + 'Specification schema is invalid.' + colors.reset);
             console.error(formatSchemaError(err, context));
             process.exit(1);