merge revision(s) 50685: [Backport #11198]
* ext/socket/ancdata.c: use RB_GC_GUARD instead of volatile [ruby-core:69419] [Feature #11198]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_2@50838 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 50685: [Backport #11198]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_2@50838 b2dd03c8-39d4-4d8f-98ff-823fe69b080e