* ext/win32ole/win32ole.c (ole_invoke): call rb_hash_foreach instead
  of rb_block_call.

* ext/win32ole/win32ole.c: add comment for rdoc of WIN32OLE_VARIANT
  class.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47060 b2dd03c8-39d4-4d8f-98ff-823fe69b080e