vm_insnhelper.c: missing super in method module

* vm_insnhelper.c (vm_search_super_method): direct superclass of a
  module is found when super called in a Method object generated a
  method defined in a module, call method_missing in that case.
  [ruby-core:59358] [Bug #9315]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44455 b2dd03c8-39d4-4d8f-98ff-823fe69b080e