Scripts/Pit of Saron: Tyrannus followup

fix new issue caused by 947cb6a453892c6002738b424d66ca19c102a533

src/server/scripts/Northrend/FrozenHalls/PitOfSaron/boss_scourgelord_tyrannus.cpp

@@ -556,7 +556,7 @@ class at_tyrannus_event_starter : public AreaTriggerScript
             if (player->IsGameMaster() || !instance)
                 return false;
 
-            if (instance->GetBossState(DATA_TYRANNUS) != DONE)
+            if (instance->GetBossState(DATA_TYRANNUS) != IN_PROGRESS && instance->GetBossState(DATA_TYRANNUS) != DONE)
                 if (Creature* tyrannus = ObjectAccessor::GetCreature(*player, instance->GetGuidData(DATA_TYRANNUS)))
                 {
                     tyrannus->AI()->DoAction(ACTION_START_INTRO);