backport r33001 from trunk.
lib/net/imap.rb (msg_att): accepts extra space before ')'. based on the patch by art lussos. [Bug #5163] [ruby-core:38820]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_3@33003 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
backport r33001 from trunk.
lib/net/imap.rb (msg_att): accepts extra space before ')'.
based on the patch by art lussos. [Bug #5163] [ruby-core:38820]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_3@33003 b2dd03c8-39d4-4d8f-98ff-823fe69b080e