* lib/net/imap.rb (receive_responses): does not hang when an unexpected BYE

  response received.  fixed [ruby-core:27944].  Thanks, Bob Potter.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@26599 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 3 insertions, 2 deletions

diff --git a/lib/net/imap.rb b/lib/net/imap.rb
index 3a8145e03c..980fed61ca 100644
--- a/lib/net/imap.rb
+++ b/lib/net/imap.rb
@@ -1017,7 +1017,8 @@ module Net
     end
 
     def receive_responses
-      while true
+      connection_closed = false
+      until connection_closed
         synchronize do
           @exception = nil
         end
@@ -1054,7 +1055,7 @@ module Net
               if resp.name == "BYE" && @logout_command_tag.nil?
                 @sock.close
                 @exception = ByeResponseError.new(resp)
-                break
+                connection_closed = true
               end
             when ContinuationRequest
               @continuation_request_arrival.signal