Fix borked comparison.

Author: ioquatix

spec/net/http/post/multipart_spec.rb

@@ -100,7 +100,7 @@ def assert_additional_headers_added(post, parts_headers)
 
     body = post.body_stream.read
     expect(body.lines.grep(/name="foo"/).length).to be == 2
-    expect(body) =~ /Content-Type: application\/json; charset=UTF-8/
+    expect(body).to be =~ /Content-Type: application\/json; charset=UTF-8/
   end
 
   it "test_form_multipart_body_with_arrayparam" do