fix specs

app/controllers/concerns/oauth_applications.rb

 module OauthApplications
   extend ActiveSupport::Concern
-  prepend ::EE::OauthApplications
+  prepend ::EE::Concerns::OauthApplications
 
   included do
     before_action :prepare_scopes, only: [:create, :update]

ee/app/controllers/ee/concerns/oauth_applications.rb

 module EE
-  module OauthApplications
-    extend ActiveSupport::Concern
+  module Concerns
+    module OauthApplications
+      extend ActiveSupport::Concern
 
-    def log_audit_event
-      AuditEventService.new(current_user,
-                            current_user,
-                            action: :custom,
-                            custom_message: 'OAuth access granted',
-                            ip_address: request.remote_ip)
-          .for_user(@application.name).security_event
+      def log_audit_event
+        ::AuditEventService.new(current_user,
+                                current_user,
+                                action: :custom,
+                                custom_message: 'OAuth access granted',
+                                ip_address: request.remote_ip)
+            .for_user(@application.name).security_event
+      end
     end
   end
 end