Call chdir() with a block

lib/backup/manager.rb

@@ -11,10 +11,9 @@ module Backup
       s[:tar_version]        = tar_version
       tar_file = "#{s[:backup_created_at].to_i}_gitlab_backup.tar"
 
-      orig_pwd = Dir.pwd
-      Dir.chdir(Gitlab.config.backup.path)
-
-      File.open("#{Gitlab.config.backup.path}/backup_information.yml", "w+") do |file|
+      Dir.chdir(Gitlab.config.backup.path) do
+        File.open("#{Gitlab.config.backup.path}/backup_information.yml",
+                  "w+") do |file|
           file << s.to_yaml.gsub(/^---\n/,'')
         end
 
@@ -32,7 +31,7 @@ module Backup
         File.umask(orig_umask)
 
         upload(tar_file)
-      Dir.chdir(orig_pwd)
+      end
     end
 
     def upload(tar_file)