rubocop cleaning

app/controllers/application_controller.rb

@@ -2,6 +2,7 @@ class ApplicationController < ActionController::Base
   helper_method :current_user
   def current_user
     return nil if session[:user_id].nil?
+
     User.find session[:user_id]
   end
 end

app/controllers/users_controller.rb

@@ -1,5 +1,5 @@
 class UsersController < ApplicationController
-  before_action :set_user, only: %i[ show edit update destroy ]
+  before_action :set_user, only: %i[show edit update destroy]
 
   # GET /users or /users.json
   def index
@@ -59,13 +59,14 @@ class UsersController < ApplicationController
   end
 
   private
-    # Use callbacks to share common setup or constraints between actions.
-    def set_user
-      @user = User.find(params[:id])
-    end
 
-    # Only allow a list of trusted parameters through.
-    def user_params
-      params.require(:user).permit(:username)
-    end
+  # Use callbacks to share common setup or constraints between actions.
+  def set_user
+    @user = User.find(params[:id])
+  end
+
+  # Only allow a list of trusted parameters through.
+  def user_params
+    params.require(:user).permit(:username)
+  end
 end