lib/*: remove closed checks

Follow r56795.  Since Ruby 2.2, calling #close on a closed
socket no longer raises exceptions.

* lib/cgi/session.rb (update): remove closed? check
* lib/net/http.rb (finish, transport_request): ditto
* lib/net/imap.rb (disconnect): ditto
* lib/net/pop.rb (do_start, do_finish): ditto
* lib/net/smtp.rb (do_start, do_finish): ditto
* lib/open3.rb (popen_run, pipeline_run): ditto
* lib/pstore.rb (transaction): ditto
* lib/shell/process-controller.rb (sfork):
* lib/tempfile (_close, call, Tempfile.create): ditto
* lib/webrick/httpauth/htdigest.rb (flush): ditto
* lib/webrick/httpauth/htpasswd.rb (flush): ditto
* lib/webrick/server.rb (start_thread, cleanup_shutdown_pipe): ditto

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56865 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 3 deletions

diff --git a/lib/net/imap.rb b/lib/net/imap.rb
index 9895ed68ce..7a4d4da301 100644
--- a/lib/net/imap.rb
+++ b/lib/net/imap.rb
@@ -329,9 +329,7 @@ module Net
       end
       @receiver_thread.join
       synchronize do
-        unless @sock.closed?
-          @sock.close
-        end
+        @sock.close
       end
       raise e if e
     end