Scripts: Fix two issues found by Valgrind

==3400== Invalid write of size 8
==3400==    at 0x1241C32: instance_ahnkahet::GetInstanceScript(InstanceMap*) const (instance_ahnkahet.cpp:54)
...
==3400== Conditional jump or move depends on uninitialised value(s)
==3400==    at 0xB5DEAE: std::tr1::_Hashtable<unsigned long, std::pair<unsigned long const, Creature*>, std::allocator<std::pair<unsigned long const, Creature*> >, std::_Select1st<std::pair<unsigned long const, Creature*> >, std::equal_to<unsigned long>, std::tr1::hash<unsigned long>, std::tr1::__detail::_Mod_range_hashing, std::tr1::__detail::_Default_ranged_hash, std::tr1::__detail::_Prime_rehash_policy, false, false, true>::_M_find_node(std::tr1::__detail::_Hash_node<std::pair<unsigned long const, Creature*>, false>*, unsigned long const&, unsigned long) const (hashtable.h:830)
==3400==    by 0xBDA4CA: std::tr1::_Hashtable<unsigned long, std::pair<unsigned long const, Creature*>, std::allocator<std::pair<unsigned long const, Creature*> >, std::_Select1st<std::pair<unsigned long const, Creature*> >, std::equal_to<unsigned long>, std::tr1::hash<unsigned long>, std::tr1::__detail::_Mod_range_hashing, std::tr1::__detail::_Default_ranged_hash, std::tr1::__detail::_Prime_rehash_policy, false, false, true>::find(unsigned long const&) (hashtable.h:698)
==3400==    by 0xBDA5BF: HashMapHolder<Creature>::Find(unsigned long) (ObjectAccessor.h:67)
==3400==    by 0xCB5C03: Map::GetCreature(unsigned long) (ObjectAccessor.h:114)
==3400==    by 0xB6E6EF: Unit::GetCreature(WorldObject&, unsigned long) (Unit.cpp:13023)
==3400==    by 0x10F0790: boss_hydross_the_unstable::boss_hydross_the_unstableAI::Reset() (boss_hydross_the_unstable.cpp:164)

2 files changed, 7 insertions, 5 deletions

diff --git a/src/server/scripts/Northrend/AzjolNerub/Ahnkahet/instance_ahnkahet.cpp b/src/server/scripts/Northrend/AzjolNerub/Ahnkahet/instance_ahnkahet.cpp
index 82b334de512..7207bbd3aab 100644
--- a/src/server/scripts/Northrend/AzjolNerub/Ahnkahet/instance_ahnkahet.cpp
+++ b/src/server/scripts/Northrend/AzjolNerub/Ahnkahet/instance_ahnkahet.cpp
@@ -49,9 +49,10 @@ class instance_ahnkahet : public InstanceMapScript
                 JedogaTarget                = 0;
                 SwitchTrigger               = 0;
 
-                InitiandGUIDs.clear();
+                SpheresState[0]             = 0;
+                SpheresState[1]             = 0;
 
-                memset(SpheresState, 0, 2 * sizeof(uint64));
+                InitiandGUIDs.clear();
             }
 
             void OnCreatureCreate(Creature* creature) OVERRIDE
diff --git a/src/server/scripts/Outland/CoilfangReservoir/SerpentShrine/boss_hydross_the_unstable.cpp b/src/server/scripts/Outland/CoilfangReservoir/SerpentShrine/boss_hydross_the_unstable.cpp
index db270c943e5..d6205cb3ec7 100644
--- a/src/server/scripts/Outland/CoilfangReservoir/SerpentShrine/boss_hydross_the_unstable.cpp
+++ b/src/server/scripts/Outland/CoilfangReservoir/SerpentShrine/boss_hydross_the_unstable.cpp
@@ -94,6 +94,8 @@ public:
         boss_hydross_the_unstableAI(Creature* creature) : ScriptedAI(creature), Summons(me)
         {
             instance = creature->GetInstanceScript();
+            beams[0] = 0;
+            beams[1] = 0;
         }
 
         InstanceScript* instance;
@@ -159,10 +161,9 @@ public:
         }
         void DeSummonBeams()
         {
-            for (uint8 i=0; i<2; ++i)
+            for (uint8 i = 0; i < 2; ++i)
             {
-                Creature* mob = Unit::GetCreature(*me, beams[i]);
-                if (mob)
+                if (Creature* mob = Unit::GetCreature(*me, beams[i]))
                 {
                     mob->setDeathState(DEAD);
                     mob->RemoveCorpse();