minor cleanup
[git-p4: depot-paths = "//src/minitest/dev/": change = 8288]
! Refactored MiniTest::Spec into MiniTest::Spec::DSL.
[git-p4: depot-paths = "//src/minitest/dev/": change = 8289]
reindent
[git-p4: depot-paths = "//src/minitest/dev/": change = 8290]