Fix rubocop warnings

app/controllers/api_controller.rb

@@ -300,10 +300,9 @@ class ApiController < ApplicationController
   # * if authenticated via basic auth all permissions are granted, so the list will contain all permissions.
   # * unauthenticated users have no permissions, so the list will be empty.
   def permissions
-    @permissions = case
-                   when current_token.present?
+    @permissions = if current_token.present?
                      ClientApplication.all_permissions.select { |p| current_token.read_attribute(p) }
-                   when @user
+                   elsif @user
                      ClientApplication.all_permissions
                    else
                      []

app/helpers/note_helper.rb

@@ -3,14 +3,12 @@ module NoteHelper
     if by.nil?
       I18n.t("browse.note." + event + "_by_anonymous",
              :when => friendly_date(at),
-             :exact_time => l(at)
-            ).html_safe
+             :exact_time => l(at)).html_safe
     else
       I18n.t("browse.note." + event + "_by",
              :when => friendly_date(at),
              :exact_time => l(at),
-             :user => note_author(by)
-            ).html_safe
+             :user => note_author(by)).html_safe
     end
   end