struct.c: yield assoc in each_pair
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@37721 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
struct.c: yield assoc in each_pair
an unsplat argument can get both, for consistency with Hash,
OpenStruct, and etc. [ruby-dev:46533] [Bug #7382]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@37721 b2dd03c8-39d4-4d8f-98ff-823fe69b080e