parse.y: fix invalid keyword argument
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48583 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
parse.y: fix invalid keyword argument
formal argument in keyword argument definition.
[ruby-dev:48742] [Bug #10545]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48583 b2dd03c8-39d4-4d8f-98ff-823fe69b080e