merge revision(s) 55120: [Backport #12413]
* dir.c (dir_close): update RDoc for 2.3 #close change [ruby-core:75679] [Bug #12413]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_3@55405 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 55120: [Backport #12413]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_3@55405 b2dd03c8-39d4-4d8f-98ff-823fe69b080e