Merge pull request phpro#646 from glamorous/fix-empty-files-phplint

Fixed a bug when phplint is active and only non-php files are commited

Author: veewee

src/Task/PhpLint.php

@@ -53,6 +53,10 @@ public function run(ContextInterface $context): TaskResultInterface
             ->notPaths($config['ignore_patterns'])
             ->extensions($config['triggered_by']);
 
+        if ($files->isEmpty()) {
+            return TaskResult::createSkipped($this, $context);
+        }
+
         $arguments = $this->processBuilder->createArgumentsForCommand('parallel-lint');
         $arguments->add('--no-colors');
         $arguments->addOptionalArgumentWithSeparatedValue('-j', $config['jobs']);