Only show code quality tab if report exists

ee/app/views/projects/pipelines/_tabs_content.html.haml

@@ -4,6 +4,7 @@
 - license_management_settings_path = can?(current_user, :admin_software_license_policy, project) ? license_management_settings_path(project) : nil
 - licenses_api_path = licenses_project_pipeline_path(project, pipeline) if project.feature_available?(:license_management)
 - vulnerabilities_endpoint_path = expose_path(api_v4_projects_vulnerability_findings_path(id: project.id, params: { pipeline_id: pipeline.id, scope: 'dismissed' }))
+- codequality_report_download_path = pipeline.downloadable_path_for_report_type(:codequality)
 
 - if pipeline.expose_security_dashboard?
   #js-tab-security.build-security.tab-pane
@@ -24,6 +25,7 @@
     licenses_api_path: licenses_api_path,
     can_manage_licenses: can?(current_user, :admin_software_license_policy, project).to_s } }
 
-#js-tab-codequality.tab-pane
-  #js-pipeline-codequality-report{ data: { codequality_report_download_path: pipeline.downloadable_path_for_report_type(:codequality),
+- if codequality_report_download_path
+  #js-tab-codequality.tab-pane
+    #js-pipeline-codequality-report{ data: { codequality_report_download_path: codequality_report_download_path,
     blob_path: project_blob_path(project, pipeline.ref) } }

ee/app/views/projects/pipelines/_tabs_holder.html.haml

@@ -12,6 +12,7 @@
       = _("Licenses")
       %span.badge.badge-pill.js-licenses-counter.hidden{ data: { qa_selector: 'licenses_counter' } }
 
-%li.js-codequality-tab-link
-  = link_to codequality_report_namespace_project_pipeline_path(@project.namespace, @project, @pipeline), data: { target: '#js-tab-codequality', action: 'codequality_report', toggle: 'tab'}, class: 'codequality-tab' do
+- if pipeline.downloadable_path_for_report_type(:codequality)
+  %li.js-codequality-tab-link
+    = link_to codequality_report_namespace_project_pipeline_path(project.namespace, project, pipeline), data: { target: '#js-tab-codequality', action: 'codequality_report', toggle: 'tab'}, class: 'codequality-tab' do
       = _('Code Quality')