Ruby

envutil.rb: ensure errors

• test/ruby/envutil.rb (assert_separately): dump error and
  assertions by END to ensure outputs even if failed to catch the
  raised exception.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44123 b2dd03c8-39d4-4d8f-98ff-823fe69b080e