merge revision(s) 62115: [Backport #14421]
proc: fix super_method segfault after bind * proc.c: handle undefined iclass [ruby-core:85231] [Bug #14421] From: Eric Wong <e@80x24.org>
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_4@62866 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 62115: [Backport #14421]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_4@62866 b2dd03c8-39d4-4d8f-98ff-823fe69b080e