diff --git a/core/lib/Drupal/Core/Extension/ExtensionDiscovery.php b/core/lib/Drupal/Core/Extension/ExtensionDiscovery.php
index 0fcd077..81fb547 100644
--- a/core/lib/Drupal/Core/Extension/ExtensionDiscovery.php
+++ b/core/lib/Drupal/Core/Extension/ExtensionDiscovery.php
@@ -205,7 +205,7 @@ public function scan($type, $include_tests = NULL) {
       $searchdirs[static::ORIGIN_SITE] = \Drupal::service('site.path');
     }
     else {
-      $searchdirs[static::ORIGIN_SITE] = $this->sitePath ? : DrupalKernel::findSitePath(Request::createFromGlobals());
+      $searchdirs[static::ORIGIN_SITE] = $this->sitePath ?: DrupalKernel::findSitePath(Request::createFromGlobals());
     }
 
     // Unless an explicit value has been passed, manually check whether we are
@@ -216,7 +216,6 @@ public function scan($type, $include_tests = NULL) {
       $include_tests = Settings::get('extension_discovery_scan_tests') || drupal_valid_test_ua();
     }
 
-    // Scan for extensions.
     $files = array();
     foreach ($searchdirs as $dir) {
       // Discover all extensions in the directory, unless we did already.
@@ -293,7 +292,7 @@ public function setProfileDirectories(array $paths = NULL) {
   /**
    * Filters out extensions not belonging to the scanned installation profiles.
    *
-   * @param \Drupal\Core\Extension\Extension[] $all_files.
+   * @param \Drupal\Core\Extension\Extension[] $all_files
    *   The list of all extensions.
    *
    * @return \Drupal\Core\Extension\Extension[]
@@ -326,7 +325,7 @@ protected function filterByProfileDirectories(array $all_files) {
   /**
    * Sorts the discovered extensions.
    *
-   * @param \Drupal\Core\Extension\Extension[] $all_files.
+   * @param \Drupal\Core\Extension\Extension[] $all_files
    *   The list of all extensions.
    * @param array $weights
    *   An array of weights, keyed by originating directory.