proc.c: skip prepends
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39224 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
proc.c: skip prepends
on the given class. [ruby-core:52160] [Bug #7836]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39224 b2dd03c8-39d4-4d8f-98ff-823fe69b080e