Fixed LocalJumpError

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@21645 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

lib/minitest/unit.rb

@@ -325,7 +325,7 @@ module MiniTest
 
     def self.autorun
       at_exit {
-        return if $! # don't run if there was an exception
+        next if $! # don't run if there was an exception
         exit_code = MiniTest::Unit.new.run(ARGV)
         exit false if exit_code && exit_code != 0
       } unless @@installed_at_exit