using_spec.rb: skip broken test for MinGW for now

ko1 is fixing this and he suggested to skip it for now

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66062 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

spec/ruby/core/main/using_spec.rb

@@ -2,14 +2,16 @@ require_relative '../../spec_helper'
 require_relative 'fixtures/classes'
 
 describe "main.using" do
-  it "requires one Module argument" do
-    lambda do
-      eval('using', TOPLEVEL_BINDING)
-    end.should raise_error(ArgumentError)
+  platform_is_not :mingw do # This is broken after TracePoint target [Feature #15289], and ko1 is fixing this
+    it "requires one Module argument" do
+      lambda do
+        eval('using', TOPLEVEL_BINDING)
+      end.should raise_error(ArgumentError)
 
-    lambda do
-      eval('using "foo"', TOPLEVEL_BINDING)
-    end.should raise_error(TypeError)
+      lambda do
+        eval('using "foo"', TOPLEVEL_BINDING)
+      end.should raise_error(TypeError)
+    end
   end
 
   it "uses refinements from the given module only in the target file" do