Fix failed static test.

Author: Nazar65

lib/internal/Magento/Framework/Backup/Archive/Tar.php

@@ -15,6 +15,9 @@
 use RecursiveDirectoryIterator;
 use RecursiveIteratorIterator;
 
+/**
+ * Class to work with tar archives
+ */
 class Tar extends \Magento\Framework\Archive\Tar
 {
     /**
@@ -25,8 +28,7 @@ class Tar extends \Magento\Framework\Archive\Tar
     protected $_skipFiles = [];
 
     /**
-     * Overridden \Magento\Framework\Archive\Tar::_createTar method that does the same actions as it's parent but
-     * filters files using \Magento\Framework\Backup\Filesystem\Iterator\Filter
+     *  Method same as it's parent but filters files using \Magento\Framework\Backup\Filesystem\Iterator\Filter
      *
      * @param bool $skipRoot
      * @param bool $finalize
@@ -50,7 +52,7 @@ protected function _createTar($skipRoot = false, $finalize = false)
 
         foreach ($iterator as $item) {
             // exclude symlinks to do not get duplicates after follow symlinks in RecursiveDirectoryIterator
-            if($item->isLink()) {
+            if ($item->isLink()) {
                 continue;
             }
             $this->_setCurrentFile($item->getPathname());