FIX: allow for gift exchanges every year

FIX: allow for gift exchanges every year

diff --git a/jobs/scheduled/gift_exchange.rb b/jobs/scheduled/gift_exchange.rb
index 297766f..4fbacea 100644
--- a/jobs/scheduled/gift_exchange.rb
+++ b/jobs/scheduled/gift_exchange.rb
@@ -5,8 +5,6 @@ module Jobs
   class ::DevAdditions::GiftExchange < ::Jobs::Scheduled
     every 6.hours
 
-    GIFT_EXCHANGE_CUSTOM_FIELD ||= "gifts-were-exchanged"
-
     def execute(args = nil)
       return unless SiteSetting.dev_additions_enabled
 
@@ -17,7 +15,8 @@ module Jobs
       group_name = "gift-exchange-#{now.year}"
       return unless group = Group.find_by(name: group_name)
 
-      return if group.custom_fields[GIFT_EXCHANGE_CUSTOM_FIELD].present?
+      cf_name = "gifts-were-exchanged-#{now.year}"
+      return if group.custom_fields[cf_name].present?
 
       usernames = group.users.pluck(:username)
       return if usernames.size < 3
@@ -60,7 +59,7 @@ module Jobs
         end
       end
 
-      group.custom_fields[GIFT_EXCHANGE_CUSTOM_FIELD] = true
+      group.custom_fields[cf_name] = true
       group.save_custom_fields
     end
   end

GitHub sha: 1b6cf067