checking that a user is logged in before doing fb checking

app/controllers/application_controller.rb

@@ -40,8 +40,10 @@ class ApplicationController < ActionController::Base
   end
 
   def fb_user_info
-    @access_token = env['warden'].session[:access_token]
-    @logged_in = @access_token.present?
+    if current_user
+      @access_token = env['warden'].session[:access_token]
+      @logged_in = @access_token.present?
+    end
   end
 
 end