fix n+1 problem for namespaces

app/controllers/users_controller.rb

@@ -3,7 +3,7 @@ class UsersController < ApplicationController
 
   def show
     @user = User.find_by_username!(params[:username])
-    @projects = @user.authorized_projects.where('projects.id in (?)', current_user.authorized_projects.map(&:id))
+    @projects = @user.authorized_projects.where(id: current_user.authorized_projects.pluck(:id)).includes(:namespace)
     @events = @user.recent_events.where(project_id: @projects.map(&:id)).limit(20)
 
     @title = @user.name