merge revision(s) 53485: [Backport #11976]
* symbol.h (is_attrset_id): ASET is an attrset ID. fix unexpected safe call instead of an ordinary ASET.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_3@54396 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 53485: [Backport #11976]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_3@54396 b2dd03c8-39d4-4d8f-98ff-823fe69b080e