Small fix for the Flame Tsunami DoT debuff.

It isnt perfect yet, correct factions for Lava Blaze and Flame Tsunami NPCs are needed to remove hack.
* SQL needed

--HG--
branch : trunk

src/server/scripts/Northrend/ObsidianSanctum/boss_sartharion.cpp

@@ -1610,6 +1610,7 @@ public:
 
         void Reset()
         {
+            me->SetReactState(REACT_PASSIVE);
             Tsunami_Timer = 100;
             me->SetFlag(UNIT_FIELD_FLAGS, UNIT_FLAG_NON_ATTACKABLE);
             me->SetFlag(UNIT_FIELD_FLAGS, UNIT_FLAG_NOT_SELECTABLE);