Fixed that 200 API responses have a body containing one space (#11388).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@9975 e93f8b46-1217-0410-a6f0-8f06a7374b81

test/integration/api_test/issues_test.rb

@@ -770,6 +770,7 @@ class ApiTest::IssuesTest < ActionController::IntegrationTest
         {:issue => {:notes => 'Attachment added', :uploads => [{:token => token, :filename => 'test.txt', :content_type => 'text/plain'}]}},
         credentials('jsmith')
       assert_response :ok
+      assert_equal '', @response.body
     end
 
     issue = Issue.find(1)