Core/Misc: Refactor scripts to fix static analysis warnings

Last issue to be fixed, fixes #12960

src/server/scripts/Outland/HellfireCitadel/BloodFurnace/boss_kelidan_the_breaker.cpp

@@ -66,6 +66,7 @@ class boss_kelidan_the_breaker : public CreatureScript
             boss_kelidan_the_breakerAI(Creature* creature) : BossAI(creature, DATA_KELIDAN_THE_BREAKER)
             {
                 Initialize();
+                Firenova_Timer = 0;
             }
 
             void Initialize()