fix warning: shadowing outer local variable - path

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42176 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
fix missing assignment in r42174

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42177 b2dd03c8-39d4-4d8f-98ff-823fe69b080e