Correction to restore expected current directory

lib/tasks/gitlab/backup.rake

@@ -91,16 +91,21 @@ namespace :gitlab do
       ENV["VERSION"] = "#{settings[:db_version]}" if settings[:db_version].to_i > 0
 
       # backups directory is not always sub of Rails root and able to execute the git rev-parse below
+      begin
         Dir.chdir(Rails.root)
 
         # restoring mismatching backups can lead to unexpected problems
-      if settings[:gitlab_version] != %x{git rev-parse HEAD}.gsub(/\n/,"")
+        if settings[:gitlab_version] != %x{git rev-parse HEAD}.gsub(/\n/, "")
           puts "GitLab version mismatch:".red
           puts "  Your current HEAD differs from the HEAD in the backup!".red
           puts "  Please switch to the following revision and try again:".red
           puts "  revision: #{settings[:gitlab_version]}".red
           exit 1
         end
+      ensure
+        # chdir back to original intended dir
+        Dir.chdir(Gitlab.config.backup.path)
+      end
 
       Rake::Task["gitlab:backup:db:restore"].invoke
       Rake::Task["gitlab:backup:repo:restore"].invoke