Fix build after recent cherry picks (v2.0)

src/server/scripts/Northrend/ChamberOfAspects/RubySanctum/boss_halion.cpp

@@ -1258,7 +1258,7 @@ class npc_living_inferno : public CreatureScript
                 me->CastSpell(me, SPELL_BLAZING_AURA, true);
 
                 // SMSG_SPELL_GO for the living ember stuff isn't even sent to the client - Blizzard on drugs.
-                if (me->GetMap()->GetDifficultyID() == DIFFICULTY_25_HC)
+                if (me->GetMap()->GetDifficulty() == RAID_DIFFICULTY_25MAN_HEROIC)
                     me->CastSpell(me, SPELL_SPAWN_LIVING_EMBERS, true);
 
                 if (InstanceScript* instance = me->GetInstanceScript())