ruby-runner.c.in: ignore empty env
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52035 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
ruby-runner.c.in: ignore empty env
value.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52035 b2dd03c8-39d4-4d8f-98ff-823fe69b080e