https://www.drupal.org/node/2342699 sets $pid to 1 on update, corrupting data in hook_path_update

gistfile1.txt

diff --git a/core/lib/Drupal/Core/Path/AliasStorage.php b/core/lib/Drupal/Core/Path/AliasStorage.php
index b68984871..34a8ca381 100644
--- a/core/lib/Drupal/Core/Path/AliasStorage.php
+++ b/core/lib/Drupal/Core/Path/AliasStorage.php
@@ -106,10 +106,10 @@ public function save($source, $alias, $langcode = LanguageInterface::LANGCODE_NO
         $this->catchException($e);
         $original = FALSE;
       }
-      $query = $this->connection->update(static::TABLE)
+      $this->connection->update(static::TABLE)
         ->fields($fields)
-        ->condition('pid', $pid);
-      $pid = $query->execute();
+        ->condition('pid', $pid)
+        ->execute();
       $fields['pid'] = $pid;
       $fields['original'] = $original;
       $operation = 'update';