Reuse author variable in mr spec

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

ee/spec/controllers/projects/merge_requests_controller_spec.rb

@@ -632,7 +632,7 @@ RSpec.describe Projects::MergeRequestsController do
   end
 
   describe 'GET #api_fuzzing_reports' do
-    let(:merge_request) { create(:ee_merge_request, :with_api_fuzzing_reports, source_project: project, author: create(:user)) }
+    let_it_be_with_reload(:merge_request) { create(:ee_merge_request, :with_api_fuzzing_reports, source_project: project, author: author) }
 
     let(:params) do
       {
@@ -944,8 +944,8 @@ RSpec.describe Projects::MergeRequestsController do
     end
 
     context "when a user is NOT authorized to read licenses on a project" do
-      let(:project) { create(:project, :repository, :private) }
-      let(:merge_request) { create(:ee_merge_request, :with_license_scanning_reports, source_project: project, author: create(:user)) }
+      let_it_be(:project) { create(:project, :repository, :private) }
+      let_it_be(:merge_request) { create(:ee_merge_request, :with_license_scanning_reports, source_project: project, author: author) }
       let(:viewer) { create(:user) }
 
       it 'returns a report' do
@@ -956,8 +956,8 @@ RSpec.describe Projects::MergeRequestsController do
     end
 
     context "when a user is authorized to read the licenses" do
-      let(:project) { create(:project, :repository, :private) }
-      let(:merge_request) { create(:ee_merge_request, :with_license_scanning_reports, source_project: project, author: create(:user)) }
+      let_it_be(:project) { create(:project, :repository, :private) }
+      let_it_be(:merge_request) { create(:ee_merge_request, :with_license_scanning_reports, source_project: project, author: author) }
       let(:viewer) { create(:user) }
 
       before do