Fixed failing rubocop

spec/controllers/projects/merge_requests/diffs_controller_spec.rb

@@ -5,10 +5,6 @@ require 'spec_helper'
 RSpec.describe Projects::MergeRequests::DiffsController do
   include ProjectForksHelper
 
-  before do
-    stub_feature_flags(diffs_gradual_load: false)
-  end
-
   shared_examples '404 for unexistent diffable' do
     context 'when diffable does not exists' do
       it 'returns 404' do
@@ -78,6 +74,8 @@ RSpec.describe Projects::MergeRequests::DiffsController do
   let(:merge_request) { create(:merge_request_with_diffs, target_project: project, source_project: project) }
 
   before do
+    stub_feature_flags(diffs_gradual_load: false)
+
     project.add_maintainer(user)
     sign_in(user)
   end