merge revision(s) 56489: [Backport #12832]
* proc.c (mnew_internal): follow the original class, not to loop the prepended module. [ruby-core:77591] [Bug #12832]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_2@56731 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 56489: [Backport #12832]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_2@56731 b2dd03c8-39d4-4d8f-98ff-823fe69b080e