Core/Misc: Fix issues reported by static analysis

src/server/scripts/Northrend/Naxxramas/boss_gluth.cpp

@@ -394,6 +394,7 @@ public:
             GluthGUID = creature->GetInstanceScript()->GetGuidData(DATA_GLUTH);
 
             DoCast(me, SPELL_INFECTED_WOUND);
+            timer = 0;
             state = STATE_ZOMBIE_NORMAL;
         }
 

src/server/scripts/Outland/CoilfangReservoir/TheSlavePens/boss_ahune.cpp

@@ -542,6 +542,7 @@ public:
         npc_earthen_ring_flamecallerAI(Creature* creature) : ScriptedAI(creature)
         {
             _instance = me->GetInstanceScript();
+            _mySpot = 0;
         }
 
         void Reset() override