skip test if mjit is enabled

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@67648 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

test/ruby/test_gc_compact.rb

@@ -103,6 +103,8 @@ class TestGCCompact < Test::Unit::TestCase
   end
 
   def test_many_collisions
+    skip if RubyVM::MJIT.enabled?
+
     list_of_objects = big_list
     ids       = list_of_objects.map(&:object_id)
     addresses = list_of_objects.map(&self.:memory_location)