merge revision(s) 53366:[Backport #11884]
* lib/ostruct.rb (OpenStruct): make respond_to? working on just-allocated objects for workaround of Psych. [ruby-core:72501] [Bug #11884]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_3@54387 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 53366:[Backport #11884]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_3@54387 b2dd03c8-39d4-4d8f-98ff-823fe69b080e